Thermal performance analysis of two DualSun installa6ons. DualSun Thermal performance study of DualSun installa=ons by Transénergie

Transcription

1 Thermal performance analysis of two DualSun installa6ons DualSun Thermal performance study of DualSun installa=ons by Transénergie 1

2 Objec6ve of the study Project defini6on: Study realized over 9 months (April December 2014) by the engineering firm Transénergie, specialized in renewable energies and energy management for more than 22 years. Objec6ve of the study: Mesure the temperature of the DualSun panels, as well as the solar energy provided for the domes=c hot water. The study is specifically focused on thermal produc=on. Method used: Monitoring system installed by Transénergie, installa=on realized by professional installers, analysis by Transénergie. DualSun 2015 Thermal performance study of DualSun installa=ons by Transénergie 2

3 The monitored installa6ons The two installa=ons are located in the Lyon region which is representa=ve of an average climate in France The 1 st installa=on is building- integrated, while the 2 nd installa=on is not (with non- insulated panels): this allows us to measure the impact of building- integra=on on the thermal performance. DualSun 2015 Thermal performance study of DualSun installa=ons by Transénergie 3

4 Conclusions of the study 1. The measured results are very close to the es=mated results conducted with the DualSys plasorm (see next slide), 2. The DualSun panels allow a quasi- autonomy with respect to hot water needs during the summer and inter- season months (spring / fall), 3. During the houest months, the panels never exceed 70 C, thus there is no risk for overhea=ng with the DualSun panels. DualSun 2015 Thermal performance study of DualSun installa=ons by Transénergie 4

5 The DualSys DualSys is the 1st web- based hybrid solar simulator: the plasorm allows the user to precisely es=mate the hot water and electricity produc=on of a DualSun installa=on (based on geography, roo7op orienta8on, number of panels, etc.). DualSys also provides a personalized report that can later on be used to compare measured results of the installa=on (via an adapted monitoring system). DualSun 2015 Thermal performance study of DualSun installa=ons by Transénergie 5

6 Installa6on 1: Building- integrated Descrip6on of system: 6 DualSun panels, South- west facing (20 / South), Tilt angle of 30, Building- integrated (EASY ROOF moun=ng system), 300L hot water tank for 4 people, Natural gas boiler. For more informa8on, a detailed descrip8on of this installa8on is available on our website. DualSun 2015 Thermal performance study of DualSun installa=ons by Transénergie 6

7 Installa6on 1: Solar coverage 100% 90% 80% 81% 98% 87% 96% 93% The solar coverage is the ra=o of energy provided by the solar panels for the hot water compared to total hot water needs. 70% 60% 50% 67% Réelle Measured Es=mée 40% 30% 20% 10% 30% 18% 0% Mai 2014 Juin 2014 Juillet 2014 Août 2014 Septembre 2014 Octobre 2014 Novembre 2014 Décembre 2014 The major gap in July is explained by a par=cularly cold and rainy summer 2014 in France. hup:// passe- et- futur/bilans- clima=ques/bilan- 2014/bilan- clima=que- de- l- ete# The measured results are very close to DualSys es=ma=ons (3.5% error). DualSun 2015 Thermal performance study of DualSun installa=ons by Transénergie 7

8 Installa6on 1: Autonomy in the summer 60, % 90% 50,000 80% 40,000 81% 98% 93% 70% 60% 30,000 87% 67% 50% 20,000 96% 40% 30% 10,000 20% 10% 0 Mai 2014 Juin 2014 Juillet 2014 Août 2014 Septembre 2014 Octobre 2014 % Solaire Gaz Couverture 0% During the summer (from June to September) DualSun allows a quasi- autonomy in terms of hot water needs with a solar coverage of 94%. DualSun 2015 Thermal performance study of DualSun installa=ons by Transénergie 8

9 Installa6on 1: Maximum temperatures Max at 68 C jui 14- jui 27- jui 10- jui 23- jui 5- aoû 18- aoû 31- aoû 13- sep 26- sep The maximum temperature reached in the panels is 68 C : there is therefore no risk of overhea=ng in the panels. DualSun 2015 Thermal performance study of DualSun installa=ons by Transénergie 9

10 Installa6on 2: Non- integrated system Descrip6on of system 4 DualSun panels, South- west facing (50 / South), Tilt angle of 20, Installa=on with non- integrated moun=ng system, 200 L hot water tank for 2 people, Natural gas boiler for booster. For more informa8on, a detailed descrip8on of this installa8on is available on our website. DualSun 2015 Thermal performance study of DualSun installa=ons by Transénergie 10

11 Installa6on 2: Solar coverage 100% 90% 95% * 100% 92% The solar coverage is the ra=o of energy provided by the solar panels for the hot water compared to total hot water needs. 80% 70% 66% 69% Réelle Measured Es=mée 60% 57% 50% 46% 40% 30% 20% 15% 10% 0% Avril 2014 Mai 2014 Juin 2014 Juillet 2014 Août 2014 Septembre 2014 Octobre 2014 Novembre 2014 Décembre % * The major gap in July is explained by a par=cularly cold and rainy summer 2014 in France. hup:// passe- et- futur/bilans- clima=ques/bilan- 2014/bilan- clima=que- de- l- ete# The measured results are very close to DualSys es=ma=ons (4% error). DualSun 2015 Thermal performance study of DualSun installa=ons by Transénergie 11

12 Installa6on 2: Autonomy in the summer 35, % 30,000 90% 80% 25,000 70% 20,000 66% 95% 69% * 92% 60% 50% 15,000 40% 10,000 46% 30% 5, % 20% 10% 0 Mai 2014 Juin 2014 Juillet 2014 Août 2014 Septembre 2014 Octobre 2014 % Solaire Gaz Couverture 0% * The major gap in July is explained by a par=cularly cold and rainy summer 2014 in France. hup:// passe- et- futur/bilans- clima=ques/bilan- 2014/bilan- clima=que- de- l- ete# During the summer (from June to September) DualSun allows a quasi- autonomy in terms of hot water needs with a solar coverage of 90%. DualSun 2015 Thermal performance study of DualSun installa=ons by Transénergie 12

13 Installa6on 2: Maximum temperatures Max at 67 C jui 14- jui 27- jui 10- jui 23- jui 5- aoû 18- aoû 31- aoû 13- sep 26- sep The maximum temperature reached in the panels is 67 C : there is therefore no risk of overhea=ng in the panels. DualSun 2015 Thermal performance study of DualSun installa=ons by Transénergie 13

14 Installed sensors and measures taken T1 is the temperature of the water source (cold) of the tank that then passes to the DualSun panels. T2 T2 is the temperature of the water at the output of the DualSun panels. 1 Flowmeter T3 is the temperature of the water at the output of the tank, exclusively heated by the solar panels. T4 is the temperature of the water at the output of the boiler. The flowmeter measures the flow of the water consump=on. All material used is from the RESOL brand. Solar regula6on T3 T1 Hydraulic schema8c of a DualSun installa8on with a boiler booster. T4 How to calculate the energy provided by the panels and by the booster. Solar = A * Débit * (T3- T1) Booster = A * Débit * (T4- T3) The constant A is the Cp (Calorific capacity of water) x volumic mass x the 8me of the flow through the flowmeter / Solar coverage = Solar / (Solar + Booster) DualSun 2015 Thermal performance study of DualSun installa=ons by Transénergie 14

15 Please contact us if you would like further informa=on about this study or the performance of our installa=ons: DualSun Thermal performance study of DualSun installa=ons by Transénergie