Chapter 3
Experimental Setup
3.1 Test rig components and description:
Fig. 3 illustrates schematic view of the test rig of an IDX-SAHP system. It was designed for a typical UK home administering up to 350 L/day of DHW. The main components are numbered in (Fig.3). The evacuated tube collector installed outdoor on a south facing roof has a surface area of 3.021 m2 with a 52-degree inclination (tilt angle). A 300L, stainless steel, insulated water storage tank has two coils immersed inside, one for the IDX-SAHP system and one for the direct solar thermal operation. In addition to this excessive solar energy can be stored using a phase change material (PCM) heat exchanger tank. The PCM in this case, organic PCM paraffin, has a melting point of 17 degrees centigrade and a mass of 30kg charged in the heat exchanger tank. This energy will be released to the heat pump nocturnally or when there are poor atmospheric conditions [1].
3.2 Experimental Components:
Figure 3: Test rig layout [1].
The test rig of an IDX-ASHP system has 22 main components are shown schematically in figure1 and illustrated in table1:
Component Number Component name …show more content…
The solar collector functions intermittently between two loops. One loop works in the same way as a traditional solar thermal system by producing hot water directly from solar irradiance and storing it in the WST. This system can work independently when there is sufficient solar irradiance to heat the WST. The other loop functions as a heat source for the IDX-SAHP initiating if there is not enough solar irradiance to heat the WST completely although it is able to heat the liquid –cooling evaporator leading to the heat pump as well as charging the PCM when the heat pump is turned
Experimental Setup
3.1 Test rig components and description:
Fig. 3 illustrates schematic view of the test rig of an IDX-SAHP system. It was designed for a typical UK home administering up to 350 L/day of DHW. The main components are numbered in (Fig.3). The evacuated tube collector installed outdoor on a south facing roof has a surface area of 3.021 m2 with a 52-degree inclination (tilt angle). A 300L, stainless steel, insulated water storage tank has two coils immersed inside, one for the IDX-SAHP system and one for the direct solar thermal operation. In addition to this excessive solar energy can be stored using a phase change material (PCM) heat exchanger tank. The PCM in this case, organic PCM paraffin, has a melting point of 17 degrees centigrade and a mass of 30kg charged in the heat exchanger tank. This energy will be released to the heat pump nocturnally or when there are poor atmospheric conditions [1].
3.2 Experimental Components:
Figure 3: Test rig layout [1].
The test rig of an IDX-ASHP system has 22 main components are shown schematically in figure1 and illustrated in table1:
Component Number Component name …show more content…
The solar collector functions intermittently between two loops. One loop works in the same way as a traditional solar thermal system by producing hot water directly from solar irradiance and storing it in the WST. This system can work independently when there is sufficient solar irradiance to heat the WST. The other loop functions as a heat source for the IDX-SAHP initiating if there is not enough solar irradiance to heat the WST completely although it is able to heat the liquid –cooling evaporator leading to the heat pump as well as charging the PCM when the heat pump is turned