20.500.12556/DKUM-13459 PRIMERJAVA ENERGETSKE UČINKOVITOSTI DVEH TIPOV RASTLINJAKOV OGREVANIH Z LESNO BIOMASO COMPARISON OF ENERGY EFFICIENCY IN TWO TYPES OF GREENHOUSES HEATED BY BIOMASS Lesna biomasa postaja pomemben vir energije tudi v intenzivni kmetijski pridelavi v zaprtih prostorih. Namen diplomskega dela je podrobneje proučiti toplotne izgube, ki se pojavljajo v plastenjakih (vrtnarija 1) in steklenjakih (vrtnarija 2) in izračunati potrebno količino goriva ter primerjati rezultate z dejansko porabo lesnih sekancev v obeh vrtnarijah v obdobju dveh mesecev. S pomočjo meritev temperature in izračunov toplotnih izgub smo ugotovili: toplotne izgube na enoto prostornine vrtnarije 1 so bile 1,12 kW/m3, medtem ko so v vrtnariji 2 znašale 1,22 kW/m3. Izračunana poraba goriva na enoto prostornine je znašala 6,78 kg/m3 v vrtnariji 1 in 7,36 kg/m3 v vrtnariji 2, kar je primerljivo z dejansko porabo lesne biomase (7,17 kg/m3 v vrtnariji 1, 7,58 kg/m3 v vrtnariji 2). Če poleg vseh parametrov, upoštevamo še višji temperaturni primanjkljaj v vrtnariji 2, lahko zaključimo, da so energetsko učinkovitejši steklenjaki vrtnarije 2. Wood biomass is becoming an important source of energy in the intensive agricultural production in greenhouses. The aim of my thesis was to analyse the heat losses occurring in plastic greenhouses (gardening 1) comparing to glasshouses (gardening 2). Furthermore, we calculated the required amount of fuel and compare the results with the actual biomass consumption during two months period. Using temperature measurements and heat loss calculations we can conclude that there was no difference between two types of greenhouse since in gardening 1 heat loss per unit of volume was 1.12 kW/m3 comparing to gardening 2 where heat loss per unit of volume reached 1.22 kW/m3. Calculated fuel consumption per unit of volume was 6.78 kg/m3 in gardening 1 and 7.36 kg/m3 in gardening 2, which is also comparable to actual biomass consumption (7.17 kg/m3 in gardening1 and 7.58 kg/m3 in gardening 2). Considering higher degree days deficit in the gardening 2 we can conclude that glasshouses in gardening 2 are more energy efficient. lesna biomasa plastenjak steklenjak toplotne izgube porabljena količina goriva wood biomass plastic greenhouse glasshouse heat loss fuel consumption true true false Slovenski jezik Angleški jezik Diplomsko delo 2010-03-18 22:45:55 2010-03-30 13:23:41 2022-04-12 11:12:37 2023-12-16 03:15:13 2010 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 URN:SI:UM:DK:JTE5MN05 VS_Klemen_Mitja_2010.pdf VS_Klemen_Mitja_2010.pdf 1 8EE2D049971806D6A7BF0216A61FED88 e8ab9b10879f5040c49f27d22e4448d51061d35f0efdfe3135cd795ca52cb5da e8e6bc73-7c03-11eb-bb7a-00155d0001ca 20.500.12556/dkum/0ced977a-d770-408b-bd3d-e5bbaec54ecd https://dk.um.si/Dokument.php?lang=slv&id=13632 Fakulteta za kmetijstvo in biosistemske vede 0 0 0