室内双系统热水供暖系统设计+CAD图纸
关键词： 太阳能供暖；双系统；定温控制；蓄热水箱；集热器
Design of a Dual Hot Water Heating System
Abstract: With an aim to save energy and protect environment, we will apply the solar energy
for utilization in the residential communities, especially in those cold areas where large
quantity of coals are consumed for central heating in the winter season. However, solar
utilization is highly influenced by the environmental factors because of its characteristics of
dispersibility, discontinuity and instability. To make up the above mentioned deficiency, the
solar and conventional energy convertible in-building dual system hot water heating system is
thus proposed to meet the heat requirements under all kinds of weather conditions. To begin
with, the solar heating indirect system absorbs solar energy through the collectors and then
heat exchanges via the heat exchanger and finally passes to the hot water storage tank to
provide heating to the required space. To achieve the switchover of the dual system , water
temperature and water level sensors are installed in the hot water storage tank and fixed
temperature points are set in the collectors (high temperature point and low temperature
point)according to supply and return water temperature, supply water temperature is 95℃and
return water temperature is 75℃, radiating by geothermal heating. Water is then repeatedly
heated and supplied at intervals until the water storage tank is filled with the hot water and
eventually reaches the differential temperature circulation condition through the on-off switch
of the solenoid valves controlled by the thermostat. The design area of collector is
84.32m2
,and the volume of hot water storage tank is 4.5m3
.The system will automatically provide heating directly by the control of the thermostat when the solar energy fails to meet
the working conditions, and provide heating by solar energy heating when it meets the
working condition.
Keywords: Solar energy heating; Dual system; Thermostat; Hot water storage tank; Collector
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目录
摘要 i
Abstract . i
目录 iii
1绪论 1
1.1 采用双系统热水供暖的可行性与优越性 . 1
1.1.1 双系统供暖采用太阳能的优点和缺点 . 1
1.1.2 双系统应用中的经济和环保问题 . 2
1.1.3 我国的太阳能资源 . 2
1.2 太阳能采暖利用情况和方式 . 3
1.2.1 被动式太阳能利用 . 3
1.2.2 主动式太阳能利用 . 4
1.3 太阳能供热采暖 . 5