08 octobre 2011


Underfloor heating

This option is available in two formats: electric (dry) and central heating (piped hot water).

In general, underfloor heating provides a warm floor and will equally act to radiate heat upwards into the conservatory to provide even warmth in the room, with no space lost to radiators.



However there are a number of negatives to bear in mind when considering underfloor heating for your conservatory.

    * Conservatories tend to have high ceilings and big expanses of glass relative to their floor area; so underfloor heating often isn't sufficient to heat some conservatories during the colder months.  Additional heating such as radiators may be required.
    * Underfloor heating takes a long time to warm up, so planned rather than spontaneous use of the conservatories in the colder months is needed.

    * This slow response time can also result in the conservatory becoming too hot and taking many hours to cool down.

    * Certain floor coverings are best avoided for use with underfloor heating – such as carpet, which will insulate the heat and stop it rising, or solid wood, which is prone to split or warp when used with underfloor heating.   Tiles or engineered wood flooring (including laminate) are a good choice instead.  

    * Piped underfloor heating systems are often only an option at the design stage of the build and due to the disruption and labour involved, installation costs can be prohibitively expensive.  Also, installation needs to be carefully co-ordinated with the construction of the conservatory itself.

    * Electric underfloor minimises installation costs as it is easier and more convenient to install and can be fitted retrospectively, however with the slow response time and the cost of electricity still being more than gas, running costs could be relatively high.

So for many homeowners, underfloor is not a suitable option leading them to look for alternatives.







Electric radiators

A popular and straightforward option to heating a conservatory is adding an electric radiator.  As you don't need to extend any pipework, it eliminates the disruption and cost of installing or extending a fully piped, wet system.  Electric radiators are a perfect solution:

    * If there isn't already a central heating system in the rest of the house;
    * If you don't want to extend the existing central heating system from elsewhere in the house to the conservatory; or
    * If you need additional heat in the conservatory.

The market in electric radiators has boomed over the last few years and as a result the choice of electric radiators has increased significantly.  Many shapes, sizes and finishes are now available ranging from minimalist flat panels in white, ultra modern spirals in chrome and traditional cast iron designs.

Due to the large amount of glass, conservatories often lack wall space; so electric radiator options now include low level and tall, skinny wall-mounted designs as well as floor-mounted options.

Electric radiators offer efficient performance and the nature of their design means they can bring a room up to temperature relatively quickly, in comparison to other options such as underfloor heating.

Extending your piped central heating system and adding a radiator

Adding another radiator to your central heating system is a good option provided you already have a central heating system that can be extended.

Radiators, whether they are central heating or electric, can achieve the necessary heat output required a conservatory in full due to their increasingly high performance.

Following the boom in the interior decoration industry over the last 20 years, radiators are now available in a vast array of designs and finishes, in styles to suit any interior whether it is contemporary or traditional.

There is now a wide range of radiators that are popular for heating conservatories, where the heat output required is high, yet wall space is limited.  A wealth of vertical models are now available that can utilise otherwise unused space, short radiators are now often in heights to go underneath windowsills in conservatories and bench radiators offer the option of combining your radiator with a piece of furniture.






Modern radiator valves have also followed suit with a wide variety of models available to match any radiator, alongside offering the option of thermostats that ensure a room never gets too hot and heat isn't wasted.

Trench Heating

A less recognised option, but effective none the less, trench heating offers a toasty warm room with the benefits of radiators, without the loss of wall or floor space.  A trench provides a site for a radiator below floor level with a stylish grille being placed over the top at floor level allowing heat to convect up without the slow response times of underfloor heating.

As there are many factors affecting heat loss in conservatories, your conservatory supplier or heating engineer is best informed to work out how much heat is needed to keep your conservatory warm.  Failing that, a real underfloor heating or radiator expert can work out the approximate heat outputs required, based on the information provided by you – e.g. dimensions, materials, etc.


In recent years China heat pump industry are developing fast. The China-made heat pump water heaters are sold at large quantity both in domestic and overseas markets. However, based on our experience of exporting business, many overseas customers don't have enough knowledge on heat pumps and don't know the different types of heat pumps, particularly of domestic heat pumps (also called household heat pumps, residential heat pumps in some countries). That will lead to mistaken consideration on both prices and product performances when overseas buyers are sourcing heat pumps from China. Tell me how to classify domestic heat pumps? I guess 90% answers will be "mono-bloc" type and "split type, like this:

A mono-block type domestic heat pump.  The heat pump  and the water tank are integrated into one unit. The good of this type is installation convenience.

A split type domestic heat pump. The heat pump and the water tank are separated and connected with pipes and wires. The good of this type is the heat pump can be put outside to reduce the noise indoor.

However,  "split" and "mono-bloc" classification is not the most important. The more important feature is: how the heat pumps work? How they transfer heat to water in tanks? instead of how the heat pumps look like. So, domestic heat pumps are classified to static-heating type (refrigerant-cycle type) and dynamic-heating type (water-cycle) type. The most important classification should be made according to how heat is transferred to water in tanks. Thus the domestic heat pumps can be classified into 2 types:

    * Static-heating type (refrigerant-cycle type); and
    * dynamic-heating type (water-cycle type).

And they are very different products according to the heat exchanging method.

static-heating type domestic heat pump. Notice there're heat exchangers (coils) in tanks of such heat pumps.






An exterior appearance of a static heating type domestic heat pump.

Let's look into a static heating type domestic heat pump (split type) first. A installed static-heating type (refrigerant-cycle type) domestic heat pump (split type), the apparent feature of which is refrigerant (gas) pipes connect the heat pump and the water tank.  The pipes go into the water tank then become heat exchagners in it.

Internal structure and working principle of a static-heating type (refrigerant-cycle type) domestic heat pump (split type), from which we can see it's coils and pipes including refrigerant that transfer heat to water in the tank. (Pay attention to the red words on the image.)

Let's continue and look into the other type-dynamic  heating type domestic heat pumps. From this type we can't see exposed refrigerant pipes outside any longer. Yes, they're all in heat pumps (main units). Heat exchange is done in the heat pump (not in water tanks like static-heating type). And the installation becomes simple too. Only water pipes (pay attention to the red words on the image) connect heat pumps and tanks. Not only that, the refrigerant leakage possibility becomes less  and heat exchanging  become more fully. In addition, should you want to put a heat pump on your existing water tanks, it becomes possible for the tanks without coils (which is more popular design of tanks).

Now we have talked about the difference between static and dynamic heating type. Above are all for split type domestic heat pumps. If it's mono-bloc type, the principle are same. Just the heat pump and the tank are integrated into one cabinet.

Overall, dynamic-heating type is more superior tech in respects of Eco-friendship, installation, safety and heating exchanging. The good of static-heating type is they're cheaper. (almost $100 cheaper per unit). Manufacturing costs of dynamic-heating type type is higher. So far, the majority of China manufactures are producing static-heating type (refrigerant-cycle  type), like most of manufacturers in Guangdong Province. Only minority of China manufacturers maturely control the tech of dynamic-heating type, like Wave Heat Pump water heaters.

Posté par solar522 à 08:01 - Permalien [#]
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