30 research outputs found

    Design and Test of Solar-Heat Pump Drying System

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    An exemplary platform of solar-heat pump drying system was established so as to promote its application in drying industry. Constant temperature operation in drying process is achieved by the au- tomatic control system, and waste heat is reclaimed by hea

    低温热源驱动的单效/三段(SE/TS)吸收式制冷循环

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    提出了一种新型吸收式制冷循环——单效三段(SE/TS)吸收式循环,详细阐述了该循环制冷机组的结构原理、热力循环,并根据热平衡推导出各设备热负荷计算式。通过计算机程序模拟计算,与单效循环机组进行了制冷性能的对比分析。结果表明,在热源温度相同时(80℃以下),采用单效三段式制冷循环时,相比单效循环,其制冷量、热力系数均有所提高,冷却水消耗量下降

    两级溴化锂吸收式制冷机的变工况性能实验

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    介绍了自主研制的350 kW两级溴化锂吸收式制冷机,并对该机组进行了4种变工况条件下的性能测试。分别通过改变冷媒水出口温度,冷却水进口温度,热水进口温度和热水流量来测试该制冷设备在以上4种常见变工况的外界条件下,其制冷量和热力系数(COP)的变化趋势。该实验结果显示,在设计值上下20%的变化范围内,随着冷媒水出口温度和热水进口温度的升高,热水流量的加大以及冷却水进口温度的降低,机组制冷量和热力系数(COP)均会得到提高

    Optimum design and experimental study of small parabolic trough solar receiversmall trough type solar collector

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    According to the principle of high performance and low cost, a small l trough type solar collector small parabolic trough solar receiverwas designed and madedeveloped for market,which collecting sunlight area is 12 m^2.Its the main optimization points in

    Experimental Study on an Innovative Hybrid Solar Heat Pump System for Tea Drying

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    本文介绍了一种创新设计的太阳能–热泵联合茶叶烘焙装置。结构优化的槽式聚光型太阳能集热器采用双循环热水作为传热媒介。热泵机组采用某新型高温热泵工质,可获得高达85℃~90℃的输出热风。该装置可实现太阳能单独干燥、热泵单独干燥和太阳能–热泵联合干燥等三种工作模式。使用该装置分别进行了三种工作模式下的高温烘焙茶叶的实验研究。结果发现,在干燥量相同的前提下,太阳能单独干燥模式最省电,热泵单独干燥和太阳能–热泵联合干燥耗电量几乎相同,太阳能单独干燥比另外两种干燥模式省电50%以上

    Multi-objective optimization of H_2O/LiBr double absorption heat transformer

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    A mathematic model of the double absorption heat transformer is built in this paper. Taking total heat exchanger area(Atot), coefficient of performance(COP), total exergy destruction(I) and exergy input(Exin) into consideration, a multi-objective functio

    影响静电除尘器效率的控制因素

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    通过研究影响静电除尘器除尘效率的几个常见可控因素,分析漏风、比电阻、振打周期及电场闪络频率对除尘效率的影响,并提出相应解决措施,使静电除尘器保持更高的除尘效率
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