Dizalica topline voda–voda za grijanje i hlađenje obiteljske kuće

Bolarić, Antonio (2015) Dizalica topline voda–voda za grijanje i hlađenje obiteljske kuće. = Water-to-water heat pump for heating and cooling of residential building. Master's thesis (Bologna) , Sveučilište u Zagrebu, Fakultet strojarstva i brodogradnje, UNSPECIFIED. Mentor: Soldo, Vladimir.

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Bolaric_2015_diplomski.pdf Jezik dokumenta:Croatian

Abstract

Master thesis represents the calculation of the heat pump water-water for heating and cooling of residential building on the island of Krk. Usable area of this building is 328 m2 which consists of three floors. Heat pump works in mono mode with ground water as a source of energy. Heating/cooling units on the premises used in this HVAC system are fan coils. The heat load of the residential building is determined according to the procedure of the standard EN 12831. When calculating projected heat losses of the building, transmission and ventilation heat losses are observed. The total heat loss of the building in winter is 12,5 kW. The heat load of the building in summer is calculated according to VDI 2078. The heat load is divided into internal and external heat sources. The total heat gain in summer is 10,8 kW. Energy use for heating is determined according to EN ISO 13790. Calculation according to ISO 13790 is carried out so that the whole building is treated as one zone. Total annual energy use for heating the building is 12884 kWh, which is 39,28 kWh/m2 per year, thereby building is classified as B energy class. The temperature mode of heating is 47/42 °C and accordingly to that condensation temperature is 50 °C. For the heat source in the form of ground water which is at a constant temperature of 13 °C selected vaporization temperature is 4 °C. Natural refrigerant R290 (propane) is chosen for the heat pump, mainly due to the low environmental impact. Evaporator power is calculated to 9,8 kW. Heat transfer surface of the plate evaporator is 1,26 m2 and 1,11 m2 of the plate condenser. Conducted energy-economic analysis of the heat pump water-water points out an extremely high investment costs of the system. In fact, with half the operating costs compared to conventional heating systems, investment is such that after 20 years of operation heat pump water-water will be profitable. However, environmental analysis showed a slightly better picture of the heat pumps, which in comparison to conventional heating systems have several times less CO2 emissions.

Item Type: Thesis (Master's thesis (Bologna)) dizalica topline voda-voda; Krk; propan; pločasti izmjenjivač topline heat pump water-water, Krk, propane, plate heat exchanger TECHNICAL SCIENCE > Mechanical Engineering > process energy engineering 300 Department of Thermodynamics, Thermal and Process Engineering > 320 Chair of Thermal and Process Engineering 26 Nov 2015 12:09 06 Apr 2020 15:43 http://repozitorij.fsb.hr/id/eprint/4880

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