Year 2019, Volume 22 , Issue 2, Pages 270 - 280 2019-04-30

Plastik Seralarda Toplam Isı Tüketim Katsayısı ve Isı Perdesinin Isı Tasarrufuna Etkisinin Deneysel Olarak Belirlenmesi
The Experimental Determination of The Impact of Overall Heat Consumption Coefficient and Thermal Screens on Heat Saving in Plastic Greenhouses

Ali ÇAYLI [1] , Adil AKYÜZ [2]


Bu çalışmada, seralarda ısı tasarrufu için kullanılan ısı perdelerinin etkinliği ve toplam ısı tüketim katsayısı deneysel olarak araştırılmıştır. Araştırma Ocak ve Nisan ayları arasında farklı plastik örtü malzemeleri ile kaplı 150 m2 taban alanı olan üç farklı marul serasında gerçekleştirilmiştir. Sera ısıtmasında sıcak hava üflemeli ısıtıcılar kullanmıştır. Isıtıcılar zemin seviyesinden 30 cm yukarıda konumlandırılmıştır. Isıtma 08.00-05.00 saatleri arasında yapılmıştır. Bitki seviyesi ve çatı seviyesinin yanı sıra dış sıcaklık ve bağıl nem değerleri, veri kaydediciler ile ölçülmüştür. Bu ölçümler, rüzgâr hızına dayalı toplam ısı tüketim katsayısını istatistiksel olarak hesaplamak için kullanılmıştır. Sonuçlar, ısı perdelerinin ısı kaybına karşı bir direnç oluşturduğunu ve böylece ısı kayıplarını azalttığını göstermektedir. Aynı zamanda ısı perdelerinin, rüzgâr hızına bağlı olarak ısı kaybına etkisi de belirlenmiştir. Seralarda ısı tasarrufu oranlarının çok düşük rüzgâr hızlarında %8 ile %22 arasında ve 4 m s-1 rüzgâr hızında %17-36 arasında değiştiği hesaplanmıştır.

This study was conducted to experimentally determine the effect of thermal screens used for heat saving and overall heat consumption coefficient on heat loss in greenhouses. The trial was established in three different lettuce greenhouses with 150 m2 in floor size using different plastic covering materials between January and April. Hot air vent heaters were used for heating.  The heaters were positioned 30 cm above ground level. The heating was done between 08.00 p.m. and 05.00 a.m. Plant level and roof level as well as external temperature and relative humidity were measured with data loggers. These measurements were used to statistically calculate overall heat consumption coefficient based on wind speed. The results demonstrate that thermal screens created a resistance against heat loss, thus reducing heat losses. The effect of thermal screens on heat loss depending on the wind speed was also determined. It was found out that heat saving ratios in greenhouses varied between 8% to 22% under very low wind speeds and between 17% - 36% under a wind speed of 4 m s-1.

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Primary Language en
Subjects Science
Journal Section RESEARCH ARTICLE
Authors

Orcid: 0000-0001-8332-2264
Author: Ali ÇAYLI
Institution: KAHRAMANMARAS SUTCU IMAM UNIVERSITY, TÜRKOĞLU VOCATIONAL SCHOOL
Country: Turkey


Orcid: 0000-0002-2120-0680
Author: Adil AKYÜZ
Institution: KAHRAMANMARAŞ SÜTÇÜ İMAM ÜNİVERSİTESİ, ZİRAAT FAKÜLTESİ, BİYOSİSTEM MÜHENDİSLİĞİ BÖLÜMÜ
Country: Turkey


Dates

Application Date : December 7, 2018
Acceptance Date : January 17, 2019
Publication Date : April 30, 2019

APA Çaylı, A , Akyüz, A . (2019). The Experimental Determination of The Impact of Overall Heat Consumption Coefficient and Thermal Screens on Heat Saving in Plastic Greenhouses . Kahramanmaraş Sütçü İmam Üniversitesi Tarım ve Doğa Dergisi , 22 (2) , 270-280 . DOI: 10.18016/ksutarimdoga.vi.493745