Richard Fitton

Adoption of sustainable retrofit in UK social housing

Purpose – The study was designed to assess the knowledge, adoption and perceived effectiveness of sustainable retrofit technologies within the UK social housing sector.Design/methodology/approach – The study was undertaken using a structured questionnaire that was completed by 130 providers of social housing.Findings – The study showed that social housing providers were evenly split in their reliance on internal or external information for sustainable retrofit knowledge. In terms of adoption identified that this was strongly driven by government‐funded programmes, leading to widespread adoption of low technology solutions. The respondents identified that many leading edge technologies were perceived to be less effective.Research limitations/implications – The study represents a snap‐shot of adoption and effectiveness issues, therefore does not show the trajectory of adoption which should be addressed in a follow‐up study.Practical implications – The social housing sector has been viewed as a market maker ...

Assessing the performance of domestic heating controls in a whole house test facility

The energy consumed by domestic space heating systems represents a considerable share of the energy consumed in the UK. At the same time up to a quarter of English homes have inadequate controls on the central heating systems. Current modelling tools, and results from the limited field trials that have been carried out, are problematic due to the influence of the behaviour of occupants and variability of weather conditions. The Salford Energy House is a full-sized end terrace house built within a climate controlled laboratory. This allows a house of typical construction to be extensively analysed while completely disconnected from the unpredictability of weather conditions and human behaviour. This paper presents a series of tests carried out in the Salford Energy House into the effectiveness of installing room thermostats and thermostatic radiator valves. Savings of 40% in terms of energy consumption, cost and CO2 were achieved. The results should be regarded with caution in terms of their extent and application to real homes, but represent a significant contribution to the gap in current knowledge due to the ability to isolate the performance of homes from uncooperative variables, and a potential base for the development of more effective modelling tools. Practical application: This research provides evidence to support installation and use of room thermostats and thermostatic radiator valves as an effective means of reducing domestic energy consumption and overheating.

Quantifying the performance of a passive deaerator in a gas-fired closed loop domestic wet central heating system

In the UK, approximately 16% of the energy use can be attributed to domestic wet central heating systems. Government financial support and advances in technology have led to boilers becoming more efficient and a range of technologies are now available that claim to be able to improve the efficiency of domestic wet central heating systems. One such low cost technology is a passive deaerator. This article presents the results obtained from installing a passive deaerator on the closed loop of a gas-fired wet central heating system, under controlled conditions in the Salford Energy House. The results indicate that although marginally less heat output was required from the boiler when the passive deaerator was operating, these savings are more or less out weighted by the boiler short cycling more frequently. Consequently, the overall reduction is gas consumption achieved by utilising the passive deaerator device is only of the order of 0.5%; this scale of savings may just be a consequence of measurement noise. The implications are that although a marginal benefit may be attributed to these products, if short cycling takes place, then these savings may become insignificant. Practical application: This article describes a test method that has been used to quantify the energy savings that could be achieved by installing a passive deaerator on the closed loop of a wet central heating system. Although the results indicate that the energy savings associated with using such a device are likely to be marginal, the test method described could be used to test a range of other devices that claim to improve the performance of domestic wet central heating systems, to directly compare before and after performance.