With out finishing up a full building heat loss analysis, and calculating its related energy consumption profile and the new water necessities of the buildings occupants. You can’t accurately design a ground supply heat pump system.
The main problem with many renewable energy installations is, that compared to regular energy methods resembling gas/oil or electrical, the installed costs are usually a lot higher, thus which means the economies of scale are more limited. An outsized Warmth pump will spend most of its time running under half load situations, which can result in a shortening of the equipments lifespan and finally affect performance.
Beneath-sizing can result in a system that requires another heating system to be used, instead of the GSHP during times of cold weather. This is known as another bivalent system and is not very efficient. A prime up system can be required to assist the system meet its requirements. Whilst it is in reality fairly normal to have what is named a parallel bivalent system, the place two programs work collectively in periods of peak loads, the Warmth pompe de caldura principiu de functionare pump will work at maximum output offering the base load of the heating, whilst the opposite system tops up the temperature levels. It’s vitally important to know the buildings and its occupant’s energy necessities so that the most energy efficient and subsequently cost effective system is designed, as typically the use of non renewable supplementary heating shouldn’t exceed 5% of the annual energy requirement.
It is not solely the sizing of the heat pump that needs to be considered when designing the system. Different ground circumstances may have an affect on the performance of the ground coil or borehole system used to collect warmth from the ground. It is extensively thought that ground supply heat pump methods take their warmth from geothermal heat nonetheless, this only occurs in a number of regions of the UK.
The ground collects photo voltaic energy and almost the entire ground heating effect comes from the sun, even up to hundreds of meters below ground level. The type of ground ie, sand/gravel, rock, clay have different levels of heat extraction. Even the moisture levels of the ground will have an effect on the efficiency and due to this fact the design of the system.
And not using a ground condition survey being carried out one could not even say whether or not or not a coil system is appropriate. If the ground conditions are such that there is let us say, 1m of topsoil over rock then the cost of the installation will vastly increase.