method for obtaining optimal economic insulation thickness of building wall

• Main Authors: ZHANG YUMEI, ZHAO TINGFENG, JIE PENGFEI, LI FATING, YAN FUCHUN
• Format: Patent
• Language: Chinese; English
• Published: 29.03.2019
• Subjects: CALCULATING; COMPUTING; COUNTING; DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR

The invention discloses a method for obtaining the optimal economic heat preservation thickness of a building wall. Firstly, the outdoor dry bulb temperature in the whole heating season is obtained according to the outdoor temperature in a standard meteorological year, and the heating design heat load under different outdoor dry bulb temperatures and different thickness of the heat preservation layer, and the water supply and return temperatures of a primary network and a secondary network are obtained. According to the supply and return water temperature of the primary network, the heat of steam extraction and steam depletion, as well as the annual operation cost of the whole heating season are obtained. The annual investment cost of the thermal insulation material and the absorption heatpump is obtained by adopting the equivalent annual value method, and the annual operation cost and the annual investment cost are summed up to obtain the annual total cost Y of the central heating system of the cogeneration;