Sökning: "Return temperatures"
Visar resultat 1 - 5 av 29 avhandlingar innehållade orden Return temperatures.
1. Spot the difference! : On the way towards automated fault handling in district heating buildings
Sammanfattning : This thesis focuses on how district heating utilities may work with fault handling in customer installations as a tool to reduce their return temperature levels. Reduced return temperatures would make it possible to improve the efficiency of the district heating systems and decrease their environmental impact. LÄS MER
2. Fault handling processes in district heating customer installations : Current and future solutions
Sammanfattning : When trying to integrate more fossil-free heat sources such as renewable energy and heatrecycled from other processes into the current district heating systems, problems occur due tothe high temperature levels in the systems. There are many reasons to why the temperaturelevels are high, but one frequently occurring issue is that the return temperatures of thecustomer installations are undesirably high due to faults in the substations or internal heatingsystems of the installations. LÄS MER
3. Hydronic Heating Systems The Effect of Design on System Sensitivity
Sammanfattning : This thesis starts from the recognition that a hydronic heating system can be optimised, but can never be totally perfect. Sooner or later, in practice, deviations - caused by one or more components having slightly different characteristics or settings than they are assumed or supposed to have - arise. LÄS MER
4. Buildings and district heating - contributions to development and assessments of efficient technology
Sammanfattning : The objective of this thesis is to contribute to improved performance of district heating systems by focusing on three items. Item 1: Study of three methods for improving the performance of sub-systems within buildings connected to the distribution network. The methods can be considered as more or less innovative. LÄS MER
5. To analyse measurements is to know!
Sammanfattning : Renewable energy sources dominated the world energy supply until the beginning of the 20th century, when fossil energy became the dominant energy source worldwide. Today, fossil fuels contribute to over 80% of world energy supply. But there are two major reasons why fossil energy use has to stop. LÄS MER