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Thermia Värme AB is one of the market leading manufactures of heat pumps. In order to maintain this position, the company wants to improve the vibration characteristics of their products. The aim of this thesis is to develop product design changes that lead to a reduction of …
… has high energy cost due to the high amount of power needed to power fans and heat exchangers. Using high volumes of air for cooling also leads to noise pollution. The conversion from air to liquid cooling would possibly make the operation of the electronics more cost efficient …
jämförelse mellan naturlig och mekanisk ventilation
… to the pigs? well-being. Loading on very hot days increases the risk of heat stress, which prevents the animals from cooling themselves down effectively. Stress also increases the amount of heat emitted by the pigs into their surroundings. Heat is transferred, by the laws of …
… the energy consumption was found out to be the usage of a contra flow tube heat exchanger. The heat exchange should occur twice, first between the main wash and the cold rinse and later between the cold rinse and the hot rinse. This stops cold water from entering the tub of the …
Utveckling av värmeväxlare
… has through the acquisition of a company begun to design and produce aircraft heaters whose origin is early 1970s which follows a high inefficiency in terms of energy consumption and size. The aircraft heater, which is sold worldwide, serves its purpose for customer satisfaction …
… In the housing and real estate sector, an installation of an exhaust air heat pump that reuses the heat in the exhaust air in order to lower the amount of acquired energy, is an example of such an action. The recovered energy can then be used for heating of radiators and tap …
… and volume, uptake of anaesthetic agents and the production of carbon dioxide, heat and moisture. Further demands on the simulator are durability and size; the device shall be compact enough to be moveable. The resulting simulator fulfils the requirements and enables better …
… rebuilding are going to be needed in buildings 111, 113 and contains new heat and ventilation equipment, new shipping office and a new loading dock. The amount of AGVforklifts for this alterative will be 7, where one of them is used to transport foilracks. Alternative 3 looks …
En ändrad styrning av framtemperaturen
… possible control strategy to minimize flow fluctuations in Uppsala’s district heating system. High variations in flow rate may lead to complications caused by hydraulic constraints in the district heating system. These complications, such as inadequate pressure and temperature …
En teknisk och ekonomisk utredning av fördelarna med att isolera under värmerören
… and the environment is becoming a hotter issue. The construction of the ground heating systems often lack thermal insulation under the heating pipes, which means that the heat from the pipes not only warm up the soil surface but also heats the surrounding soil. The insulation …
… inhibition method. Second the nitrogen flow, as well as the water- and heat flows, were modeled through the SOIL-SOILN-model Third; the nitrogen flow was calculated to compare with the results from the model. The results from the measurements were then compared with the results …
A problem in the field of district heating is the oil burners needed to provide power when a peak load occurs. One possible way of reducing the needed amount of oil is to reduce the power demand for space heating in the district-heating substations when the need for district …
… energy can be extracted from an aquifer, where the groundwater is used as heat exchange medium while heat and cold are stored in the surrounding material in the aquifer and to some extent in the groundwater. Application of aquifer storage for the use of geothermal energy is …
Med fokus på fläktvarvtal och köldmedieflöde
… in order to evaluate a new technological measure and focuses generally on a heat pump system to a HWC-washing machine. The client is Asko Appliances AB, a company well known for its environmentally friendly products. The goal of this study was to improve the energy efficiency of …
… processing methods are used. These methods are often based on some kind of heat treatments, which result in so called Malliard reactions. Expanding is one of these heat treatments, which earlier has shown to decrease the ruminal degradation of concentrates consisting of peas …
