【摘要】：本文基于小型空氣源熱泵熱水器的工作原理，分別對空氣源熱泵熱水器的四大部件（渦旋壓縮機、套管式冷凝器、熱力膨脹閥及翅片管蒸發(fā)器）建立穩(wěn)態(tài)模型，并根據(jù)一定的參數(shù)耦合關(guān)系，建立了整個熱泵熱水器系統(tǒng)的模型。通過對其運行特性的模擬研究，分析了環(huán)境溫度、冷卻水進水溫度和冷卻水流量對其系統(tǒng)性能的影響情況，為熱泵熱水器在實際應用中的控制調(diào)節(jié)提供依據(jù)。 研究結(jié)果表明，環(huán)境溫度對空氣源熱泵熱水器的性能影響較大�？諝庠礋岜脽崴鞯闹茻崃亢凸亩际请S著環(huán)境溫度的升高而不斷增加的，系統(tǒng)制熱系數(shù)COP隨著環(huán)境溫度的升高而顯著增加。當干濕球溫度分別為7/6℃、20/15℃、35/24℃時，系統(tǒng)COP分別為2.76、3.76、5.5。同時，在保證冷卻水進出口溫度15/55℃時，冷卻水的流量隨著環(huán)境溫度的升高而不斷增加。當干濕球溫度為7/6℃、20/15℃、35/24℃時，系統(tǒng)的冷卻水流量分別為0.018kg/s、0.028kg/s、0.044kg/s。當工況條件為冷卻水流量0.025kg/s，冷卻水進水溫度變化范圍5-20℃時，雖然機組的出水溫度會有所上升，但是其功耗和排氣溫度會隨之增大，制熱量和系統(tǒng)COP隨之減小，因此，若非要求較高的供水溫度，則無需增加冷卻水的進水溫度。當工況條件為冷卻水進水溫度15℃，冷卻水流量變化范圍0.025-0.035kg/s時，系統(tǒng)制熱量增加，功耗減少，導致系統(tǒng)COP的增加，并且其排氣溫度、排氣壓力和壓比都隨之下降，可以改善機組的運行條件，，但是隨著流量的增加，其出水溫度減小，因此需考慮供水溫度是否能達到用水要求。
[Abstract]:Based on the working principle of small air source heat pump water heater, the steady state model of four parts of air source heat pump water heater (scroll compressor, casing condenser, thermal expansion valve and finned tube evaporator) is established in this paper. The model of the whole heat pump water heater system is established according to the coupling relation of certain parameters. The influence of environment temperature, inlet temperature of cooling water and flow rate of cooling water on the system performance is analyzed through the simulation study of its operation characteristics, which provides the basis for the control and regulation of heat pump water heater in practical application. The results show that ambient temperature has great influence on the performance of air source heat pump water heater. The heating capacity and power consumption of air-source heat pump water heater increase with the increase of ambient temperature, and the heating coefficient COP of the system increases significantly with the increase of ambient temperature. When the dry and wet bulb temperature is 7 / 6 鈩

本文編號：2141257