Open AccessField experience with ULTDH substation for multifamily building
Author(s) -
Jan Eric Thorsen,
Torben Ommen
Publication year - 2018
Publication title -
energy procedia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.474
H-Index - 81
ISSN - 1876-6102
DOI - 10.1016/j.egypro.2018.08.184
Subject(s) - heat pump , renewable energy , renewable heat , engineering , electricity , waste heat , environmental science , waste management , electricity demand , accumulator (cryptography) , automotive engineering , process engineering , mechanical engineering , electrical engineering , hybrid heat , heat exchanger , computer science , electricity generation , thermodynamics , algorithm , physics , power (physics)
Ultra-low temperature district heating (ULTDH) substations may be an important enabler for integrating higher shares of renewables and waste heat in the district heating (DH) network. In the paper, we describe a concept and first experimental results for producing domestic hot water (DHW) at DH supply temperatures of 45°C. The substation utilises a heat pump for boosting the DH temperature up to approximately 60°C to an accumulation tank, after which the DHW can be produced on demand for temperatures up to 55°C. Additionally, the system included a separate heat pump to supply the DHW circulation heat demand. The DH accumulator tank provides load shift opportunities, which is important going towards the integrated, flexible and renewable based future energy system. The two heat pumps operate with a COP of approximately 5, which results in representative share of approximately 11-13 % electricity to supply the DHW including circulation.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom