CPD Type 2 buildings- Gym health centre This notion has 12 showers, and 4 wash hand sinks. The three low-carbon systems were sized accordingly to the specic requirement of the notion. The cost of the heat pump was also considered during the selection process. Three designs were generated as follows. s #OMBUSTION n X INSTANTANEOUS WATER HEATER K7 AS SHOWN IN lGURE s (YBRID n K7 HEAT PUMP AND X INSTANTANEOUS WATER HEATER K7 as shown in gure 3 s &ULLY %LECTRICn HEAT PUMP K7 AND X K7 DIRECT ELECTRIC HEATER as shown in gure 4. Figure 2: Combustion System The heating load is met by using three appliances. Coldwater goes into the water HEATER AND EXITS AT AND water returns at 55 C. Figure 3: Hybrid System The heating water from the heat pump goes through the plate heat exchanger, which separates heating water from domestic water. The gas water heater provides the power for peak loading conditions. Figure 4: All Electric system The left side of the schematic is similar to the hybrid setup; it consists of a Heat pump and plate heat exchanger. Direct electric heating provides the additional power required for peak loading conditions. For more details on RINNAI products visit rinnai-uk.com 44 October 2022 www.cibsejournal.com Advertisement Feature p43-46.CIBSEMagOct22.indd 44 21/09/2022 14:50