Distributed district solar heating prosumers both produce and consume heat, and its heat balance has the characteristic of dynamic thermal profit or loss. This paper proposes a dynamic thermal profit or loss calculation method for the distributed district solar heating prosumer, and gives the indicators such as the average thermal profit or loss and the ratio of profit to loss for the evaluation of thermal profit or loss. Through theoretical analysis and numerical simulation, the influence of regional climate difference, building type and floor number on thermal profit or loss of prosumers are studied. The results show that the average thermal profit or loss and the ratio of profit to loss of solar Ⅰ-cold zone （Lhasa） are the largest, solar Ⅰ-severe cold zone （Golmud） takes the second place, solar Ⅱ-severe cold zone （Xining） is smaller, solar Ⅱ-cold zone （Kashi） is minimum; compared with the continuous heating buildings such as residences and hotels, the average thermal profit and the ratio of profit to loss of office buildings and shopping malls is higher; The average thermal profit and the ratio of profit to loss of prosumers both decrease with the increase of the number of floors during the heating period.
Key words
distributed /
solar energy /
central heating /
thermal profit or loss /
the ratio of profit to loss
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