67 uppsatser · sida 1 av 5
Drain water heat recovery is an uncommon measure in multi-unit residential buildings. There is technology available for the purpose but the knowing and experience of the heat recovery systems is little. The purpose of this thesis is to evaluate the future potential of drain …
Latent heat storage is a way to store thermal energy when a phase change material undergoes a phase change. The advantage of latent heat storage is the capability to store more energy per mass unit than other heat storage methods. The most commonly used phase change in latent …
… verken i Linköping AB (Tekniska verken) is responsible for the district heating network in Linköping. Their vision is to create the world’s most resource efficient region. An important step towards this vision is more efficient usage of produced heat, something which could be …
En numerisk analys av den ringformade koaxiala borrhålsvärmeväxlaren
The borehole heat exchangers of today suffer from poor thermal and hydrodynamic performance. The purpose of this thesis is to improve the performance of ground source heat pump systems and thermal energy storages by increasing the energy efficiency of the borehole heat …
… demands that are placed on the building. The unit chosen was a cross-flow heat exchanger, and this work is to compare it with two other heat exchangers to see if a more energy and cost efficient could have been chosen. The heat exchangers that was chosen for the comparison was a …
En jämförelse av värmeväxlare
… demands that are placed on the building. The unit chosen was a cross-flow heat exchanger, and this work is to compare it with two other heat exchangers to see if a more energy and cost efficient could have been chosen. The heat exchangers that was chosen for the comparison was a …
… as possible. This is clearly noticeable by an increase in home produced heat with e.g. solar panels or heat pumps heating systems. These changing customer demands forces district heating technology to be redesigned, which is why there is an ongoing research regarding the next …
En utredning av möjligheterna med spillvattenvärmeväxlare
The purpose of this report is to investigate the possibilities with drain water heat recovery (DWHR) in residential buildings. Information and relevant theory has been collected and summarized in this report. Calculations have been done for given scenarios to evaluate profits …
This thesis aims at determining the heat losses in a property vent stack and its roof valve. Upon request of a company, the vent stack is analysed for possible heat recovering solutions to be implemented, while relining of the drain system is executed and with a suitable payback …
Gtherm is an innovation company who has an unique air heat exchanger underdevelopment. The purpose of this thesis is to provide data of suitable motors for theheat exchanger and to find suitable motor suppliers.A motor specification was designed. It is an important basis for 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 …
A district heating plant has the advantage that it can take advantage of the waste heat from industries and use of cheap fuels to produce heat. But for the long term is competitive requires that energy is also saved in district heating plants. One way to save energy in a …
… 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 …
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 …
… changes and moisture fluctuations in the air. Oneof the steps is to add heat during the cooling process in order to reduce the relativehumidity of the exhaust air. The air passes thru an adsorptions rotor which thenabsorbs moisture from the supply air. This results in the …
