NRP MULTIPURPOSE HEAT PUMPS 2 AND 4-PIPE SYSTEMS PLUS PRODUCTION OF DOMESTIC HOT WATER

Transcription

1 MULTIPURPOSE HEAT PUMPS AND 4-PIPE SYSTEMS PLUS PRODUCTION OF DOMESTIC HOT WATER Multipurpose air cooled units with axial fans. For external installation. High efficiency version.

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3 MULTIPURPOSE NRP The NRP series from Aermec. A value choice. The NRP series represents for Aermec an entry into the world of heat pump units of the multipurpose type: units that allow simultaneous production of chilled water and hot water in the most versatile and efficient way. The NRP Multipurpose heat pump is capable of satisfying simultaneously and independently all the requirements for cooling, heating and production of domestic hot water. All this in the most rational and efficient way: the multipurpose heat pump units are the most efficient current technology because they extract the maximum recovery of heat of condensation; heat that would otherwise be rejected to the external ambient. The NRP heat pumps are therefore the units most suitable for 4 pipe systems (simultaneous demands for heating and cooling) and for pipe systems + domestic hot water (simultaneous heating and production of domestic hot water; simultaneous cooling and production of domestic hot water). Aermec

4 Aermec technology has a heart. And it is green. - Simultaneous and independent production of hot water and cold water - Production of domestic hot water all year round - Very high energy efficiency, particularly at part load, through the multipurpose logic and the MultiScroll Technology - Maximum reliability through the MultiCircuit system - Extremely simplified plant: reduced time and cost of installation -40% Primary energy annual saving -8dB(A) Average noise level reduction -5% Installation cost reduction -40% Reduction of CO emissions Compared to traditional chiller + boiler installation Of Extra Low Noise models compared to standard models Compared to traditional chiller + boiler installation Carbon dioxide is responsible for the greenhouse warming effect Aermec

5 Green Comfort, versatility and savings. Aermec technology. To the service of air and water. Cooling and heating simultaneously and independently Maximum savings economic/energy Extremely simplified plant The Aermec NRP Multipurpose heat pump is the ideal choice for all applications that have simultaneous and independent requirements for heating and cooling. In general modern buildings in the commercial, lodging and health care sectors have heating and cooling demands not directly linked with seasonal variations. This creates the need to provide simultaneous and independent chilled water for space cooling and dehumidification and hot water for space heating and/or for the production of domestic hot water. The Aermec NRP Multipurpose heat pump unit does all this: it is the unit most suitable for 4 pipe systems (simultaneous requests for cooling and heating) and for pipe systems + domestic hot water. The Aermec NRP Multipurpose heat pump unit is the most efficient choice from the energy and running cost point of view. Aermec is the most efficient choice from the energy and running cost point of view. The simultaneous production of hot water and of chilled water allows the free recovery of the heat of condensation which would otherwise be rejected outdoors. At the times of simultaneous demand for heating and cooling the NRP heat pump unit reaches maximum efficiency because it simply transfers energy from the spaces to be cooled to the spaces to be heated or to the domestic hot water. The multiscroll technology serves to further increase the energy efficiency especially at part load. The Aermec NRP Multipurpose heat pump unit allows the utmost simplification of the plant and to significantly reduce the time and cost of installation. Through the multipurpose technology the installation requires no gas: a gas fired boiler is not required. NRP makes available hot water for heating and domestic hot water throughout the year, independently and also simultaneously to the demands for chilled water. Environmental respect TER: Total Efficiency Ratio With the multipurpose technology and use of non-ozone depleting refrigerant R40A, the NRP series is a friend to the environment. R40A is also a thermodynamically high efficiency refrigerant which allows, together with the use of scroll compressors, to reduce CO emissions. Adding the savings for cooling, heating and production of domestic hot water the emissions of CO compared to a traditional chiller + boiler system are reduced by 40%. The energy efficiency of traditional heat pump units is measured by the parameters of EER for cooling mode and COP for heating mode. For the new multipurpose type of heat pumps a parameter is required that takes into account the simultaneous production of hot water and chilled water. This new parameter is the TER (Total Efficiency Ratio), defined as the ratio between the total capacity produced simultaneously (heating and cooling) and the electrical power input to the unit: TOTAL EFFICIENCY RATIO: TER = (Heating Capacity + Cooling Capacity) / Electrical Power Input Looking at the technical data for the NRP series it can be seen that the TER values are significantly higher than the values for COP and EER: this demonstrates the overall very high efficiency that a multipurpose heat pump unit can achieve compared to a traditional heat pump without heat recovery. The project designer (in close collaboration with the architect) can therefore achieve the maximum energy savings, optimally balancing the heating and cooling needs for the system installation. TOTAL EFFICIENCY RATIO Aermec

6 The ideal solution for public and residential buildings. NRP is the most rational and efficient choice for all buildings that typically have heating capacity and cooling capacity demands for the whole year, such as: hospitals, hotels, and buildings for residential use. The NRP Multipurpose heat pump is the most convenient solution from an energy saving point of view for both 4 pipe systems and pipe systems with domestic hot water production. The following graphs show the results obtained in different Italian geographical locations and for various system installations (4 pipe system for offices pipe system + domestic hot water for hotels). The results are extraordinary: the Aermec NRP multipurpose technology is shown as the most economical and environmentally friendly. Energy Saving Calculation for a 4 pipe system office building Energy bill for an office 4 pipe system case (% ) The results show a significant saving on the energy bill even compared to a chiller with heat recovery + condensing boiler Milano Roma Palermo 00 Primary energy consumption for an office 4 pipe system case (% kwh) The primary energy savings are significant and ensure total environmental friendliness. Aermec NRP Multipurpose Chiller + boiler Chiller with desuperheater + boiler Chiller with total heat recovery + boiler Milano Roma Palermo Energy Saving Calculation for a pipe system + Domestic Hot Water Energy bill for a hotel pipe system + domestic hot water (% ) The Aermec NRP Multipurpose series also provides the best in the lodging sector, where space cooling and heating needs are added to by a high demand for domestic hot water production Milano Roma Palermo 00 Primary energy consumption for a hotel pipe system + domestic hot water (% kwh) Even in the lodging sector the most environmentally friendly choice is the Aermec NRP technology. Aermec NRP Multipurpose Chiller + boiler Heat pump + boiler Milano Roma Palermo 4 Aermec

7 Description of operation. The NRP Multipurpose operating schematics are detailed for various pipe and 4 pipe systems. Basic operating production for -pipe system+ HDW Cold water production only to system Description Functioning SYSTEM SIDE (EVAPORATION) cold water production O RETURN SYSTEM O SYSTEM FLOW DHW SIDE SOURCE SIDE not running (CONDENSATION) heat exchange with air Hot water production only to system Description Functioning SYSTEM SIDE (CONDENSATION) hot water production DHW SIDE not running O RETURN SIDE SOURCE SIDE (EVAPORATION) heat exchange with air O SYSTEM FLOW Aermec 5

8 Basic operating production for -pipe system+ HDW Production hot water only to DHW Description Functioning O DHW FLOW O DHW RETURN SYSTEM SIDE DHW SIDE SOURCE SIDE not running (CONDENSA TION) DHW production (EVAPORATION) Heat exchange with air Production cold water to system and hot water to DHW Description Functioning SYSTEM SIDE (EVAPORATION) cold water production O SYSTEM RETURN O DHW FLOW O DHW RETURN DHW SIDE SOURCE SIDE (CONDENSATION) DHW production not running O SYSTEM FLOW Production hot water to system and hot water to DHW Description Functioning O RETURN FLOW O SYSTEM FLOW O DHW FLOW O DHW RETURN SYSTEM SIDE DHW SIDE SOURCE SIDE (CONDENSATION) hot water production (CONDENSAZIONE) DHW production (EVAPORAZIONE) heat exchange with air 6 Aermec

9 Basic operating layout for 4-pipe system Cold water production only to system O SYSTEM RETURN O SYSTEM FLOW Description COOLING SIDE HEATING SIDE Functioning (EVAPORATION) cold water production not running SOURCE SIDE (CONDENSATION) heat exchange with air Hot water production only to system Description Functioning O SYSTEM FLOW O SYSTEM RETURN Exchanger COOLING SIDE Exchanger HEATING SIDE not running (CONDENSATION) hot water production SOURCE SIDE (EVAPORATION) heat exchange with air Silmutaneous hot and cold water production to system Description Functioning O SYSTEM RETURN O SYSTEM FLOW O SYSTEM FLOW O SYSTEM RETURN Exchanger (EVAPORATION) COOLING SIDE cold water production Exchanger (CONDENSATION) HEATING SIDE hot water production Heat Exchanger SOURCE EXCHANGER not running Aermec 7

10 TER is the new name for energy efficiency TOTAL EFFICIENCY RATIO = (Heating Capacity + Cooling Capacity) / Electrical Power Input Looking at the technical data for the NRP series it can be seen that the TER values are significantly higher than the values for COP and EER: this demonstrates the overall very high efficiency that a multipurpose heat pump unit can achieve compared to a traditional heat pump without heat recovery. The project designer (in close collaboration with the architect) can therefore achieve the maximum energy savings, optimally balancing the heating and cooling needs for the system installation. 98 kwh ELECTRICAL ENERGY 4 kwh HEATING ENERGY 4 kwh COOLING ENERGY In this example (referring to unit size NRP 50) the total energy ratio is: TER = (4 + 4) / 98 = 7.8 (*) (*) Note this high value compared to traditional heat pump COP and EER values. 8 Aermec

11 Technical features NRP is the range of multipurpose external units operating on refrigerant R40A, designed for or 4-pipe systems. With just one unit simultaneous and independent requests for hot and chilled water can be accommodated all year round. Gamma: Refrigerant R40A. refrigerant circuits. High efficiency even at part load. s optimised to benefit from the excel lent heat transfer characteristics of R40A. High efficiency scroll compressors. Axial fans with low sound level. Extremely solid structure with anti-corrosion polyes ter paint. Extended operating limits in heat pump operation: - Maximum leaving water temperature 55 C. - External air temperature from -5 C to 4 C. Units fitted as standard with fan speed controller (DCPX), which permits operation in the winter with external temperatures down to 0 C, and in heating mode with external temperatures up to 4 C. Available versions: - A High efficiency heat pump. - E High efficiency low noise heat pump. Fans: - Standard. - M High static pressure. - J Inverter. Options for integrated hydronic modules with pumps, buffer tank, water filter, flow switch, expansion tank. Microprocessor controls. Accessories VT: Anti-vibration mounts to be installed under the base of the unit. GP: Protection grille protects the external coil from accidental damage. TRX: Metal cap that replaces the plastic cap, mounted as shipping protection, for immersion heater holes in the buffer tank. DRE: Electronic soft starter which reduces starting current by about 6%. Available only with 400V power supply. Factory fitted only. RIF: Power factor correction. Connected in parallel to the motor allowing about 0% reduction of input current. Must be requested at time of order and is available factory fitted only. AER485P: RS-485 interface for supervising systems with MODBUS protocol. AERWEB00: The AERWEB option allows remote control of a chiller through a standard PC and an ethernet connection with a standard browser; 4 versions available: AERWEB00-6: Web server to monitor and remote control maximum 6 units on RS485 network; AERWEB00-8: Web server to monitor and remote control maximum 8 units on RS485 network; AERWEB00-6G: Web server to monitor and remote control maximum 6 units on RS485 network with integrated GPRS modem; AERWEB00-8G: Web server to monitor and remote control maximum 8 units on RS485 network with integrated GPRS modem. PGD: Simplified remote panel. Allows control of basic unit functions and alarm notification. Remote mounted up to 500 m away with TWISTED PAIR SCREENED cable and TCONN6J000. Aermec 9

12 Technical data - NRP NRP Multipurpose for -pipe system Cooling system side Cooling capacity A kw E kw Total input power A kw ,47 6,00 44,5 50,5 55,6 64,58 E kw 4,0 6,59 8,9 0,89,5 7,06 5, 8,95 48,7 55,5 6,88 70,60 EER A W/W ,07,87,80,78,88,85 E W/W,05,00,95,05,9,94,68,5,9,5,46,5 Water flow rate A l/h E l/h Total pressure drop A kpa E kpa Heating system side Heating capacity A/E kw Total input power A/E kw,4 5,6 7,76,4,96 5,70,64 5,08 4,6 45,7 5,80 6,8 COP A/E W/W,47,4,9,7,5,8,6,,4,4,,9 Water flow rate A/E l/h Total pressure drop A/E kpa Heating DHW side Heating capacity A/E kw Total input power A/E kw,4 5,48 7,7,6 4,0 5,57,54 4,98 4, 45,66 5,46 6,5 COP A/E W/W,49,44,40,7,5,0,7,,,5,5,0 Water flow rate A/E l/h Total pressure drop A/E kpa Cooling wit heat recovery Cooling capacity A/E kw Recovered power A/E kw Total input power A/E kw,45 5,8 8,0 0,85,90 5,90,8,7 4,87 48,58 5,0 64,06 Water flow rate (system side) A/E l/h Total pressure drop (system side) A/E kpa Water flow rate (DHW side) A/E l/h Total pressure drop (DHW side) A/E kpa TER () A/E W/W 7,7 7,58 7,9 7,55 7,4 7,67 7,57 7,6 7,05 7,06 7, 7,7 NRP Multipurpose for 4-pipe system Cooling system side Cooling capacity A kw E kw Total input power A kw ,47 6,00 44,5 50,5 55,6 64,58 E kw 4,0 6,59 8,9 0,89,5 7,06 5, 8,95 48,7 55,5 6,88 70,60 EER A W/W ,07,87,80,78,88,85 E W/W,05,00,95,05,9,94,68,5,9,5,46,5 Water flow rate A l/h E l/h Total pressure drop A kpa E kpa Heating system side Heating capacity A/E kw Total input power A/E kw,4 5,48 7,7,6 4,0 5,57,54 4,98 4, 45,66 5,46 6,5 COP A/E W/W,49,44,9,7,5,8,6,,4,4,,9 Water flow rate A/E l/h Total pressure drop A/E kpa Cooling wit heat recovery Cooling capacity A/E kw Recovered power A/E kw Total input power A/E kw,45 5,8 8,0 0,85,90 5,90,8,7 4,87 48,58 5,0 64,06 Water flow rate (cold side) A/E l/h Total pressure drop (cold side) A/E kpa Water flow rate (hot side) A/E l/h Total pressure drop (hot side) A/E kpa TER () A/E W/W 7,7 7,58 7,9 7,55 7,4 7,67 7,57 7,6 7,05 7,06 7, 7,7 Data declared in accordance with UNI EN 45:0. Cooling mode Evaporator leaving water temperature 7 C External air temperature 5 C ΔT 5 C () Total Efficiency Ratio. Heating mode Condenser leaving water temperature 45 C External air temperature 7 C b.s. 6 C b.u. ΔT 5 C. Cooling mode with heat recovery Heat recovery leaving water temperature 45 C Evaporator leaving water temperature 7 C ΔT 5 C 0 Aermec

13 Technical data - NRP NRP Multipurpose for -pipe system Cooling system side Cooling capacity A kw E kw Total input power A kw 7,5 8,4 89,40 09,6,55 6,7 47,0 57,9 E kw 8, 95,4 0,,8 5,6 50,55 6, 76,67 EER A W/W,95,90,89,94,97,9,98,0 E W/W,45,7,6,8,44,44,46,4 Water flow rate A l/h E l/h Total pressure drop A kpa E kpa Heating system side Heating capacity A/E kw Total input power A/E kw 74,65 8, 89,40 7,5,47 9,96 55,68 67,47 COP A/E W/W,5,0,6,0,,0,5,7 Water flow rate A/E l/h Total pressure drop A/E kpa Heating DHW side Heating capacity A/E kw Total input power A/E kw 74,6 80,7 89,0 6,04 0,95 9,45 55,00 66,80 COP A/E W/W,6,,7,,,0,6,7 Water flow rate A/E l/h Total pressure drop A/E kpa Cooling wit heat recovery Cooling capacity A/E kw Recovered power A/E kw Total input power A/E kw 68,9 80,4 89,65 0,00 6,,97 40,8 5,76 Water flow rate (system side) A/E l/h Total pressure drop (system side) A/E kpa Water flow rate (DHW side) A/E l/h Total pressure drop (DHW side) A/E kpa TER () A/E W/W 7,50 7,9 7, 7,58 7,55 7,8 7,6 7,57 NRP Multipurpose for 4-pipe system Cooling system side Cooling capacity A kw E kw Total input power A kw 7,5 8,4 89,40 09,6,55 6,7 47,0 57,9 E kw 8, 95,4 0,,8 5,6 50,55 6, 76,67 EER A W/W,95,90,89,94,97,9,98,0 E W/W,45,7,6,8,44,44,46,4 Water flow rate A l/h E l/h Total pressure drop A kpa E kpa Heating system side Heating capacity A/E kw Total input power A/E kw 74,6 80,7 89,0 6,04 0,95 9,45 55,00 66,80 COP A/E W/W,6,,7,,,0,6,7 Water flow rate A/E l/h Total pressure drop A/E kpa Cooling wit heat recovery Cooling capacity A/E kw Recovered power A/E kw Total input power A/E kw 68,9 80,4 89,65 0,00 6,,97 40,8 5,76 Water flow rate (cold side) A/E l/h Total pressure drop (cold side) A/E kpa Water flow rate (hot side) A/E l/h Total pressure drop (hot side) A/E kpa TER () A/E W/W 7,50 7,9 7, 7,58 7,55 7,8 7,6 7,57 Data declared in accordance with UNI EN 45:0 Sound power: Aermec determines sound power values in accordance with ISO 964-, as required for Eurovent certification. () Total Efficiency Ratio Sound Pressure Sound pressure measured in free field conditions over a reflective plane (directivity factor Q=) at 0 m distance from external surface of unit, in accordance with ISO 744. Aermec participates in the EUROVENT programme: LCP. The products involved can be found at the website Aermec

14 GENERAL DATA Electrical data Total input current Aermec () A A () E A Maximum current (FLA) () A/E A Starting current (LRA) () A/E A Compressors Compressors type scroll scroll scroll scroll scroll scroll scroll scroll scroll scroll scroll scroll n Circuits n Capacity control % 0/50/00 0/50/00 0/50/00 0/50/00 0/50/00 0/50/00 0/50/00 0/50/00 0/50/00 0/5/50/00 0/5/50/00 0/5/50/00 Refrigerant R40A R40A R40A R40A R40A R40A R40A R40A R40A R40A R40A R40A Exchanger side (hot/cold) pipe system / side (cold) 4 pipe system Exchanger type plate plate plate plate plate plate plate plate plate plate plate plate n hydraulic connections (in/out) Ø / / / / / / / / / / / Exchanger side (DHW) pipe system / side (hot) 4 pipe system Exchanger type plate plate plate plate plate plate plate plate plate plate plate plate n hydraulic connections (in/out) Ø / / / / / / / / / / / Fans standard Fans type axial axial axial axial axial axial axial axial axial axial axial axial n Air flow rate cooling mode A m /h E m /h Air flow rate heating mode m /h System integrated hydronic module Buffer tank l Useful head kpa For more information, refer to the selection program Magellan or the technical documentation available Soud data Sound pressure () A db(a) () E db(a) Sound power () A db(a) () E db(a) Power supply V/ph/Hz 400V/N 400V/N 400V/N 400V/N 400V/N 400V/N 400V/N 400V/N 400V/N 400V/N 400V/N 400V/N GENERAL DATA Electrical data Total input current () A A () E A Maximum current (FLA) () A/E A Starting current (LRA) () A/E A Compressors Compressors type scroll scroll scroll scroll scroll scroll scroll scroll n Circuits n Capacity control % Refrigerant R40A R40A R40A R40A R40A R40A R40A R40A Exchanger side (hot/cold) pipe system / side (cold) 4 pipe system Exchanger type plate plate plate plate plate plate plate plate n hydraulic connections (in/out) Ø " " " 4" 4" 4" 4" 4" Exchanger side (DHW) pipe system / side (hot) 4 pipe system Exchanger type plate plate plate plate plate plate plate plate n hydraulic connections (in/out) Ø " " " 4" 4" 4" 4" 4" Fans standard Fans type axial axial axial axial axial axial axial axial n Air flow rate cooling mode A m /h E m /h Air flow rate heating mode m /h System integrated hydronic module Useful head kpa For more information, refer to the selection program Magellan or the technical documentation Soud data Sound pressure () A db(a) 56,5 56,5 56,5 59, , () E db(a) ,5 5 54,5 56,5 Sound power () A db(a) 88,5 88,5 88,5 9,5 9 9, () E db(a) 8 8 8, , ,5 88,5 Power supply V/ph/Hz 400V//50Hz 400V//50Hz 400V//50Hz 400V//50Hz 400V//50Hz 400V//50Hz 400V//50Hz 400V//50Hz () The electrical data of the versions without hydronic module integrated () Calculated in cooling mode

15 Technical drawings A A A B NRP NRP NRP NRP A NRP NRP NRP Dimensions (mm) NRP u.m Versione Height (mm) Width (mm) Length (mm)) Weight empty A B C (kg) A/E A/E A/E A/E NRP u.m Versione Height (mm) Width (mm) Length (mm)) Weight empty A B C (kg) A/E A/E A/E A/E Attention: weights refer to units without pumps or buffer tank. For futhers informations, please refer to the selection program Magellan to the technical booklet available in the web site The technical data shown in the following documentation are not binding. Aermec reserves the right, at any time, to make any changes necessary to improve the product. Aermec

16 Total comfort. Maximum efficiency. Minimum consumption. This is Aermec. ltalian technology serving your comfort. Aermec s capacity to remain leader in an evolving market is based on constant research for quality and innovation. A total Italian quality because each unit is designed, developed and tested in the modern and technologically advanced research laboratories of Aermec in Bevilacqua (Verona). Constant attention to research and the final product quality is also developed through continuous training of specialised personnel and a close collaboration with the most prestigious Italian Universities. Room for fan coils, split system and small chiller acoustic test. 4 Aermec

17 Aermec S.p.A. Via Roma, Bevilacqua (VR) - Italia Tel Fax sales@aermec.com