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A Study of Calculation Method for Dynamic Heating Load of Solar Heating Room

Author: YangXiaoHua
Tutor: LiuYanFeng
School: Xi'an University of Architecture and Technology
Course: Heating,Gas Supply, Ventilation and Air Conditioning Engineering
Keywords: Solar heating Heat load factor Dynamic heat load Z transfer function
CLC: TU832.02
Type: Master's thesis
Year: 2010
Downloads: 220
Quote: 0
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Abstract


Domestic About two design standards for solar heating - \still using the steady - state calculation methods , this method is simple, but it can not reflect the characteristics of solar building heat load volatility . Solar heating heat source for heat , on the other hand , also has significant volatility , fluctuations in the phase of conflict and the heat load , the solar heating system should rely on regenerative regulation in order to ensure that the heating effect , and to grasp the dynamic law of solar heating room heat load the basis of the heat accumulator tune . In view of this , we learn from the air conditioning cooling load factor method , an easy- engineering applications of solar heating room dynamic heat load calculation methods - thermal load factor method . The formation process of the mathematical model , the Z transfer function as the theoretical basis , the exterior wall ( or roof ), the dynamic heat transfer process and room dynamic heat load and the exterior wall ( or roof ) loss of heat and the mathematical model of the heat load of the room . Exterior wall ( or roof ) or heating the room together with the indoor air as a thermodynamic system , outside interference or indoor lost heat as the system input , and the heat loss through the exterior wall ( or roof) or room heat load as the system output . The time series of input and output are transforming relationship between them using the Z transfer functions . Simulation programming calculated from the exterior wall ( or roof ) results in loss of heat hourly solar heating room heat load factor . Found by different towards the external walls and the different structure of the wall heat load coefficients calculated : the larger the wall thermal capacity , the smaller the diurnal variation of the coefficient of thermal load ; same structure , but different towards the wall of the coefficient of thermal load there is a big difference. On the basis of this study , we developed a solar heating room dynamic heat load calculation software . Use the software to calculate the different locations , different wall ( roof ) structure , different wall toward the hourly heat load and heat load factor of heating the room of the combination of circumstances typical day . This study provides a reliable basis for the design and operation of the solar heating system adjust .

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CLC: > Industrial Technology > Building Science > Housing construction equipment > Air-conditioning, heating, ventilation,and its equipment > Heating > Heating load calculations
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