Simulation of Vertical Type Ground Source Heat Pump

Abstract

In this study, vertical type ground source heat pump (GSHP) was used to heat a restaurant located in Istanbul province and to meet the usage hot water requirement. The designed system is simulated with the help of the TRNSYS (time dependent system simulation) program then its performance and energy consumption are examined. While room temperature was kept constant at 22 ºC in winter with the help of the GSHP system, 300 l/h of water at 55ºC was drawn to use for 15 minutes during the whole year (at 06:00 a.m., 08:00 a.m., 20:00 p.m. and 22:00 p.m.). The rated heating capacity of the heat pump used is 78228 kJ/ h and the rated power consumption is 18193 kJ/h. As a result of the analysis, the total annual power consumption of the GSHP system is 3922.88 kW, the annual average performance coefficients of the heat pump and the whole system are calculated as 3.33 and 1.81 respectively. Of the energy consumption were obtained as 54.36% by the heat pump, 26.78 % by electrical heaters, 13.64% by pumps and 5.22% by fan.

Keywords

• TRNSYS,heat pump,simulation,ground source

DİKEY TİP TOPRAK KAYNAKLI BİR ISI POMPASININ SİMÜLASYONU

Abstract

Bu çalışmada İstanbul ilinde yer alan bir restoranın ısıtılması ve kullanım sıcak su ihtiyacının karşılanmasında dikey tip bir toprak kaynaklı ısı pompası (TKIP) kullanılmıştır. Tasarlanan sistem TRNSYS (Zamana bağlı sistem simülasyonu) programı yardımıyla simüle edilmiş ve sistemin performansı enerji tüketimi açısından incelenmiştir. Ele alınan mahallin sıcaklığı, TKIP sistemi yardımıyla kış aylarında 22 ºC’de sabit tutulurken, tüm yıl boyunca günde dört kere (6:00, 8:00, 20:00 ve 22:00) saatlerinde 15 dakika süreyle 55 ºC sıcaklıkta 300 l/h su kullanımı gerçekleşmektedir. Kullanılan TKIP ünitesi nominal ısıtma kapasitesi 78228 kJ/h, nominal güç tüketimi 18193 kJ/h’dır. Analiz sonucunda TKIP sisteminin yıllık toplam güç tüketimi 3922,88 kW, ısı pompası ve tüm sistemin yıllık ortalama performans katsayıları sırasıyla 3,33 ve 1,81 olarak hesaplamıştır. Tüketilen enerjinin %54,36’ü ısı pompası, %26,78 ısıtıcılar, %13,64’ü pompalar, %5,22’i ise fan tarafından tüketilmektedir.

Keywords

• TRNSYS,ısı pompası,simülasyon,toprak kaynaklı

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