Lochalsh & Skye Housing Association employed Compass Building and Construction Services Ltd to build 15 homes as part of the second phase of the housing development at Carr Brae, Dornie.
Korrie worked with the project team to supply and install the plumbing and sanitaryware whilst also completing the design of the central heating system.
The finalised central heating design used Ecodan air source heat pumps, radiators and mains pressure hot water cylinders. Additional domestic hot water generation was provided by solar thermal panels. The central heating system was designed to MCS standards and achieves a performance level of 4 stars.
Domestic Heat Pump & Solar Thermal Systems
15 Units at Carr Brae, Dornie - Case Study
In real terms this means radiators with a maximum surface temperature of 45 degrees Celsius and a heating system with an average annual efficiency of 300%. Korrie worked closely with the Lochalsh and Skye Housing Association to ensure that the tenants were aware of how to get the best use out of their heating and solar thermal systems.
Solar thermal panel input was maximised by limiting the times when the air source heat pump heats the hot water cylinder. This enables the solar panels to trickle heat into the hot water cylinder throughout the course of the day. This is a cost effective way to run the system as the heat pump only provides a boost during the morning.
The tenants have provided some very positive feedback on the actual running costs. One tenant we recently spoke to advised us of an electricity bill totalling approximately £600 for the year. This is testament to the renewable technologies and current building practices utilised in this project.
Mitstibushi Electric heat pumps were installed. They are high efficient at providing heating and hot water in the home.