Lea Valley Olympic Centre
It all started when the olympics came to London
About Lee Valley White Water Centre
Lee Valley White Water Centre was host to the London 2012 Olympic Games and you can now experience a range of activities at this venue. Rafting the Olympic course is a must for anyone ticking things of their bucket list! You'll get several runs down the course. We progressively up the fear factor each time and by your final run you’ll be surfing, high siding, spinning and nose dunking with the very best! You can also choose from our range of other white water activities and a choice of canoeing and kayaking sessions, from family paddling on our lake to mastering our two white water courses.
A heat pump is a device that transfers heat energy from a source of heat to what is called a heat sink. Heat pumps move thermal energy in the opposite direction of spontaneous heat transfer, by absorbing heat from a cold space and releasing it to a warmer one. A heat pump uses a small amount of external power to accomplish the work of transferring energy from the heat source to the heat sink. The most common design of a heat pump involves four main components – a condenser, an expansion valve, an evaporator and a compressor. The heat transfer medium circulated through these components is called refrigerant.
While air conditioners and freezers are familiar examples of heat pumps, the term "heat pump" is more general and applies to many heating, ventilating, and air conditioning (HVAC) devices used for space heating or space cooling. When a heat pump is used for heating, it employs the same basic refrigeration-type cycle used by an air conditioner or a refrigerator, but in the opposite direction – releasing heat into the conditioned space rather than the surrounding environment. In this use, heat pumps generally draw heat from the cooler external air or from the ground.
Heat pumps are also increasingly used to heat domestic hot water, the hot water used for kitchens, bathrooms, clothes washers, etc.
In the heating mode, heat pumps are significantly more energy efficient than simple electrical resistance heaters. However, the typical cost of installing a heat pump is higher than that of a resistance heater.
When discussing heat pump efficiencies, the following terms are commonly used: coefficient of performance (COP), seasonal coefficient of performance (SCOP) and seasonal performance factor(SPF). The more efficient a heat pump is the less energy it consumes, and the more cost-effective it is to operate. There are several factors that will affect the efficiency of a heat pump such as climate, temperature, auxiliary equipment, technology, size and control system.