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Combining testing data, analyses some main problems existed in the application of ground-source heat pump (GSHP) technique through testing and assessing on thermal performance of typical GSHP system in winter conditions. Presents some corresponding measures, provides basic conditions for the future promotion of GSHP technology.
Gas transmission and distribution system, the gas load is the main parameter to impact the project planning, which determines the capacity of equipments and operation program. Therefore, accurate prediction of gas load is of extremely important significance for gas companies to improve safety and reliability of gas supply. The forecasting method of tradition gas load would not meet the requirement...
In order to solve the instability and intermittence of solar heating system, a experiment system of indirect expansion solar assisted water source heat pump radiant floor heating is proposed in the paper. The mathematics model of coefficient of performance for the system is presented after analyzing the operation principle in different conditions. The influence of the inlet and outlet temperatures...
Urban building energy consumption is one important part of the total social energy consumption. How to predict building energy consumption of urban development trends and master the changes of urban building energy consumption are important link of building energy-saving. In order to forecast urban building energy consumption from both the macro and micro aspects, multi-layer feed forward artificial...
Types and proportion of air conditioning heat and cold sources of northern existing buildings including government office buildings, large public buildings and civil architectures are illustrated in the paper based on detailed investigation. On the basis of selection, energy consuming, life cycle cost and payback period of investment, environmental and social benefits, analytic hierarchy process (AHP)...
From the aspects of overall structure of the system, principle of System Design, completeness, standardization, advancement and adaptability etc, a dynamic underground pipe network information system is proposed in the paper, which is supported by MapGIS as working platform. The dynamic management system of network is also discussed in detail from the aspects of terrain management module, editing...
A solar assisted water source heat pump for Radiant Floor Heating (SWHP-RFH) experimental system with heat pipe vacuum tube solar collector as heating source and radiant floor as terminal device is proposed in the paper. The Mathematics Model of dynamic coefficient of performance (COP) for SWHP-RFH is presented after analyzing the operation principle in different conditions. The influence of the inlet...
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