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Design of a grey water heat recovery system in order to satisfy the domestic hot water demand of a block of dwellings.

Number: No 079

Author(s) : HERVÁS-BLASCO E., MASIP X., NAVARRO-PERIS E., CORBERÁN J. M.

Summary

Passive houses linked to more efficient heating and cooling technologies have been one of the focus in last years. However, to close the loop of the building sector, there is still one open source: wasted heat from grey water. This paper addresses the potentiality of the wasted heat for grey water to produce domestic hot water (DHW) based on a heat pump system. A heat pump is designed specifically for that application, a heat recovery heat exchanger and two variable volume storages tanks compose the system. The main objective of this work is to determine the potential of recovering this waste heat source in order to minimize the house energy consumption. An optimization of the size of the different elements and of the operation algorithm of the system has been performed in order to minimize the CO2 emissions and evaluate the maximum potential of the proposed strategy. The potential of using this type of waste heat as a source for heat pump system is demonstrated and could imply a recovery of available energy of up to 60%.

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Pages: 11 p.

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  • Original title: Design of a grey water heat recovery system in order to satisfy the domestic hot water demand of a block of dwellings.
  • Record ID : 30029968
  • Languages: English
  • Subject: Technology
  • Source: 13th IEA Heat Pump Conference 2021: Heat Pumps – Mission for the Green World. Conference proceedings [full papers]
  • Publication date: 2021/08/31

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