Thermal Store Energy Bank. Storage Tanks

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1 Thermal Store Energy Bank Storage Tanks

2 Thermal Store Energy Bank The Evinox Thermal Store Energy Bank is the perfect choice for storing energy for use in renewable heating and hot water systems. The innovative heat transfer technology within the Thermal Store transfers energy generated by renewable sources via the heat exchanger to the Energy Bank for the fast supply of hot water. With standard tanks ranging from 350L to 3000L there is a capacity to suit most sizes of system. The Thermal Store can be used to capture energy from a variety of renewable and fossil fuel heat sources, such as solar, heat pumps, biomass and CHP, and is capable of providing hot water at varying temperatures to suit different heat emitters within a building. For example the Thermal Store can supply an underfloor heating system that may require 40 C, radiators requiring 70 C and hot water at 55 C, all from the same unit. Unique Technology The Thermal Store Energy Bank includes unique patented technology that enables the hot water to be transferred from the bottom to the top of the store via a heat transfer tube, where it can then be used almost immediately without waiting for the remaining water in the tank to be heated. This ensures for example that there is hot solar heated water available for an early morning shower, even after just a short exposure to the morning sun. In contrast, with traditional solar buffer storage tanks, the solar heated water enters from the bottom of the buffer, and rises to the top of the tank from where it can be drawn off. The disadvantage of this process is that it takes a very long time for the whole tank to be heated, from the bottom to the top, and only when all of the water is heated can it be used to provide the building with hot water. To circulate water from the bottom to the top of a storage tank, other manufactures use a variety of circulating pumps and control systems. These items require energy and maintenance, which in turn produce extra costs. This is not required in the Evinox Thermal Store Benefits Unique technology ensures the tank is fully charged to the required temperature in a short space of time, even when only a limited amount of energy is available. Integrates effectively with all renewable energy sources. Through the principle of gravity working from top to bottom, an optimised use of energy is guaranteed. Excess energy can be used for heating purposes. The heat transfer technology does not require any circulating pumps, control systems or additional heat exchangers, making it a low energy system. Using a storage tank for heating water reduces environmental impact. Instantaneous fresh hot water is provided without the possibility of legionella. Winner of H&V News Award for Industrial and Commercial Product of the Year when launched, and a finalist for The Sustainable Building Services Awards. Stores can be manufactured in tailor-made sizes up to litres to suit any application.

3 Instantaneous Hot Water Production Coils Fresh hot and cold water provided when required In conventional buffer tanks where water is not replaced with a fresh supply on a daily basis, the quality of water cannot be guaranteed to be clean, fresh and free from bacteria. After just 24 hours the quality of stored water considerably deteriorates. This can lead to a risk when showering, in that any bacteria present can be inhaled, causing health problems. The Thermal Store ensures that water is continually circulated and only heated as required to provide fresh, clean and safe hot and cold water. Thermal Store heat exchanger Outer skin constructed from copper to provide excellent thermal heat transfer Inner skin is tin-coated to prevent the build-up of bacteria. Baffle Solar Coil Heat Transfer Tube Optimal use of renewable energy with the powerful heat transfer technology Infrared illustration showing the controlled heat transfer into an S-PD 1500 (Buffer storage =1500 Ltr.) The beginning of heating transfer. After only 2 hours of sun on Solar collectors hot water is available for use. The final phase of the heat transfer process allows any excess heat to be used for heating purposes. 3

4 S-PD Storage Tank for Solar Applications Due to the unique specification of the patented multi buffer storage system, optimal use of solar energy is guaranteed. Should the system not incorporate solar thermal initially but you wish to integrate solar collectors into the heating system at a later date; the store can be provided and equipped for the future addition of the solar coil for simple conversion on site. Capable of integrating alternative energy sources e.g. solid fuel, electricity, use of ambient temperature via heat pumps. Optional pre-heat exchanger can increase energy input from solar collectors by up to 15%, resulting in a higher rate of hot water production. Instantaneous fresh hot water is provided without the possibility of legionella. Heat exchanger available in various sizes to suit hot water requirements. Extremely low thermal losses due to 120mm thick complete insulation made from CFC- free foam. Robust and hard wearing outer skin. Solar Thermal Typical System Schematic ROOM CONTROLLER SOLAR CONTROLLER SECONDARY HOT WATER OUTLET HOT WATER HEATING CIRCUIT SOLAR CIRCULATION UNIT Q5 GLYCOL FILL POINT THERMAL STORE MCWS SUPPLY

5 Type Hot water tank Available Hot water* Measurements/mm Weight Tilting height with insulation without insulation Ltr. Ltr. height Ø height Ø kg mm S-PD S-PD S-PD S-PD S-PD S-PD S-PD S-PD S-PD S-PD S-PD S-PD * storage temp. 65 C, cold water temp. 10 C and an average warm water temp. 40 C Store and Coil Sizing Chart Energy Bank Storage Tank Dia. (mm) Maximum Solar collector area (m²) WT 2.3 Solar from 600mm Dia. WT 3.2 Solar from 790mm Dia. WT 4.1 Solar from 1000mm Dia. S-PD S-PD S-PD S-PD S-PD S-PD S-PD S-PD S-PD S-PD S-PD S-PD For 40 l/min use 2 of WT 50 Cu heat exchangers +1 WT 36 Cu pre-heat exchanger 2. For 60 l/min use 4 of WT 40 Cu heat exchangers +2 WT 36 Cu pre-heat exchangers 3. Size the energy storage bank according to the table showing the capacity of Thermal Storage Bank according to the solar collector area. 5

6 S-WP-PD Storage Tank for Heat Pump Applications The Evinox Thermal store incorporates a buffer plate that divides the tank into two zones. The lower zone is used for heating purpose and operates with water up to 45 C, enabling the heat pump to work with a higher COP of 4. The upper zone in the tank is used for domestic purposes and operates with water up to 60 C. At this higher temperature the heat pump works at a reduced COP. The stratification system within the tank (the plate and the tubes) draws the water up from the lower zone, where the water is very efficiently heated, to the upper zone. Simultaneously this creates a zone of cold water in the lower part that is fed into the return connection of the heat pump. Both factors increase the efficiency of the heat pump therefore reducing electricity usage. Via the zone of cold water in the lower part of the tank the heat pump can work constantly, with no stop/start, which reduces the strain significantly and increases the life of the pump. When using a heat pump as the main energy source in a heating system, our Thermal Store hot water transfer technology guarantees a longer working life for the heat pump and ensures that it operates at maximum performance efficiency. The efficiency of a heat pump is reduced the higher the temperature of hot water that is required. In addition to this, the warmer the water is that is fed into the reverse heat pump flow, the less efficient the heat pump is due to the increased amount of electricity that is required. The S-WP-PD heat pump store is supplied flitted with a blanking flange to enable the future addition of a solar heat exchanger, should it be required. Optimal and efficient operation of the heat pump Instantaneous fresh hot water is provided without the possibility of legionella. Heat exchanger available in various sizes to suit hot water requirements. Extremely low thermal losses due to 120mm thick complete insulation made from CFC- free foam. Robust and hard wearing outer skin. Model Hot water tank Available Hot water* Dimensions mm Weight Tilting height with insulation without insulation Ltr. Ltr. height Ø height Ø kg mm S-WP-PD ¹ ² S-WP-PD ¹ ² S-WP-PD ¹ ² S-WP-PD ¹ ² *Based on a water usage/ 20 Ltr./min.1: ¹48 C storage tank temp. ²53 C storage tank temp. 40 C average water temp.

7 Infrared illustration shows the changes in conditions when drawing water in a Thermal Store heat pump application. A fully heated store showing the beginning of the water drawing process (via pre-and intermediate heat exchanger) As water is drawn out of the upper part of the store via the heat exchangers, 2 cold storage zones are created, which then enter into the return connection of the heat pump. Hot water from the heat pump enters the lower part of the store and immediately goes to the top of the tank via the stratification tube, where it can be withdrawn for domestic hot water. Heat Pump Typical System Schematic HEATING CIRCUIT COOLING CIRCUIT TO FCU S OR CENTRAL VENTILATION PLANT SECONDARY HOT WATER MIXING THERMOSTATIC VALVE SECONDARY BLENDING VALVE RETURN PUMP OUTLET HOT WATER PUMP GAS BUFFER VESSEL PUMP ZONE VALVE PRV DRV DECOUPLING BOTTLE TOP SENSOR WALL OF BUILDING BV MIDDLE SENSOR HEATING AND COOLING ASHP (3 PHASE OR 230V DEPENDANT ON MODEL. CHECK MANUAL) NOTE BALANCING & VALVES INCLUDED IN DECOUPLING BOTTLE KIT BOTTOM SENSOR DRV CHANGE OVER VALVES BALANCING VALVE ZONE VALVE THERMAL STORE FLOW AND RETURN MODEL DEPENDANT FLEXIBLE CONNECTIONS MUST BE USED TO AVOID NOISE CONDUCTION STRAINER DIRT SEPERATOR DRV BUFFER VESSEL FOR COOLING CIRCUIT P.REGULATING VALVE MCWS SUPPLY NOTE BUFFER VESSEL SIZED TO SUIT WATER CONTENT OF COOLING CIRCUIT BALANCED COLD WATER SUPPLY RAW WATER QUICK FILL VALVE FILLING LOOP TO BE REMOVED ONCE INSTALLATION IS COMPLETE 7

8 Uni PS Buffer Tank The Uni PS storage tank has been designed to provide a simple buffer for installations where large volumes of thermal energy are being produced via renewable sources such as CHP or Biomass. Perfectly suited to systems that incorporate CHP or Biomass. Instantaneous fresh hot water is provided without the possibility of legionella when used with hot water production coils. Extremely low thermal losses due to 120mm thick complete insulation made from CFC- free foam. Robust and hard wearing outer skin. Model Hot water tank Dimensions mm Weight Tilting height with insulation without insulation Ltr. height Ø height Ø kg mm Uni PS Uni PS Uni PS Uni PS Uni PS Uni PS Uni PS Uni PS Uni PS Uni PS Uni PS Uni PS

9 Buffer Tank Typical System Schematic VERTICAL AIR SEPERATOR BIOMASS (WOOD) 1500 LTR BUFFER VESSEL SUPPLIED AS COROLLA SMART KIT VERTICAL DIRT SEPERATOR VERTICAL DIRT SEPERATOR GAS NO 1 GAS NO 2 GAS NO 3 GAS NO 4 EXPANSION TANK / PRESSURISATION UNIT PRESSOSMART NOTES FLOW PIPEWORK RETURN PIPEWORK VERTICAL DIRT SEPERATOR 9

10 Thermal Store Range Chart Model S-PD 350 S-PD 450 S-PD 600 S-PD 750 S-PD 900 S-PD 1000 S-PD 1250 S-PD 1500 S-PD 1750 S-PD 2000 S-PD 2500 S-PD 3000 Description 350 L Solar Store 450 L Solar Store 600 L Solar Store 750 L Solar Store 900 L Solar Store 1000 L Solar Store 1250 L Solar Store 1500 L Solar Store 1750 L Solar Store 2000 L Solar Store 2500 L Solar Store 3000 L Solar Store Model S-WP-PD 750 S-WP-PD 900 S-WP-PD 1250 S-WP-PD L Heat Pump Store 900 L Heat Pump Store 1250 L Heat Pump Store 1500 L Heat Pump Store Model Uni PS 350 Uni PS 450 Uni PS 600 Uni PS 750 Uni PS 900 Uni PS 1000 Uni PS 1250 Uni PS 1500 Uni PS 1750 Uni PS 2000 Uni PS 2500 Uni PS 3000 Standard Heat Exchanger Part Number of Coils WT 30 Cu Without Circulation WT 40 Cu Without Circulation WT 50 Cu Without Circulation Specific Heat Exchanger Part Number of Coils WT 36 Cu Without Circulation WT 30 Cu (Cooling Exchanger) WT 30 CuNi (Without Circulation for Pool) WT 2.3 Solar WT 3.2 Solar WT 4.1 Solar 350 L Uni PS Store 450 L Uni PS Store 600 L Uni PS Store 750 L Uni PS Store 900 L Uni PS Store 1000 L Uni PS Store 1250 L Uni PS Store 1500 L Uni PS Store 1750 L Uni PS Store 2000 L Uni PS Store 2500 L Uni PS Store 3000 L Uni PS Store Characteristics (10 l/min), 3/4 Connection for hot water generation (15 l/min), 3/4 Connection for hot water generation (20 l/min), 3/4 Connection for hot water generation Characteristics 3.5 m 2 Heating Surface, 1 Connection use as pre heater 2.5 m 2 Heating Surface, 22mm (ext dia.) To reclaim heat from chiller 2.5 m 2 Heating Surface, 3/4 Connection for pool heating 2.3 m 2 Heating Surface, 3/4 Connection 1.4L water capacity 3.2 m 2 Heating Surface, 3/4 Connection, 1.9L water capacity (from 750L store) 4.1 m 2 Heating Surface, 3/4 Connection, 2.5L water capacity (from 1250L store) Note: Others tank sizes are available upon request please contact the Evinox Technical department on for details.

11 Case Study Evacuated tube solar energy from Evinox provides the rhino enclosure at Whipsnade Zoo with hot water for the rhino showers, the rhino pool and the enclosure Air Handling Unit. The 1500 litre thermal store allows solar heat to combine with an Air Source Heat Pump to top up any energy requirements in the winter, keeping both water and ambient temperatures at optimum levels to encourage breeding. the control system provided by Evinox ensures that the hot water for the rhino showers, the temperature of the rhino pool and the air temperature of the enclosure are at the optimum levels to encourage the rhinos to breed. The solar controller provided by Evinox allows for integrating the heating technologies and will bring the heat pump on only when the store sensors realise that there is not enough energy being produced by the solar thermal system to meet the temperature requirements of the system. Even during winter commissioning the exceptional performance of the evacuated tube system lifted the temperature of the store up to 60 C. The combination of the solar collectors and the thermal store allows the early morning sun s energy to be quickly harnessed in the upper part of the store by transferring heat, via the heat transfer tube, to above the solar baffle in the lower part of the store. When Evinox researched the best use of solar technology, they identified that the key ingredient was harnessing the energy when available and storing it in large thermal stores ready for times of demand, ensuring that solar energy is not wasted when available due to the inability to store it. The Thermal Store solution provided by Evinox, was awarded Industrial/Commercial Product of the Year in the prestigious H&V News Awards in 2008, due to the unique way it optimises solar performance, and can generate 15% more energy when compared with other methods of storage. Whipsnade Zoo has a project board in the viewing enclosure showing visitors how the heating and hot water system works, and publicising their own commitment to using renewable technology. This is the first of other planned projects around the Zoo that Evinox will be working on. The unique design of the high performance evacuated tube collectors ensures that the solar thermal system can make a contribution to heat demand all year round and not just in times of peak sunshine. The Evinox solar system, designed with northern European climates in mind, is well known for generating heat transfer in cold, windy or humid conditions, with minimal heat loss. At the request of the head keeper at Whipsnade Zoo, 11

12 Integrated heating intelligence Evinox Limited. Blenheim House. 1 Blenheim Road. Epsom. Surrey. KT19 9AP. T: +44 (0) E: info@evinox.co.uk technical@evinox.co.uk Evinox reserves the right to make changes and improvements which may necessitate alteration to the specification without prior notice. This is not a contractual document A