Solar technology is not a new for us now, it was first introduced in 1970’s and Passive solar heating is also coming from last few decades. These systems work best in those areas where weather is hot and sunny and sunlight directly can touch the solar panels. Today when we around, we can easily find many buildings around us using this technology and producing energy for their personal use. As we all know that south side of any building receives most sunlight, which is why while installing this system of passive solar heat direction is considered as most important thing.
In Passive solar heating system large size window panels are used, these window are used to absorb heat and store it in cells. Material that is used to absorb and store sunlight and heat can easily establish into walls as well as floors. These floors and walls absorb most of solar energy in day time and then release heat at night when it is needed most. Developers also named passive solar heating as direct gain heat system.Some other features that are found in these systems include sunspace and trombe walls. These ways of collecting energy and using it, show clear definition of active and passive solar collectors.
Design of passive solar heating:
Devices used in developing a passive solar heating system does not involve use of mechanical devices or any other source of energy other than solar power. Greenhouse, solariums and sunrooms are counted as good examples of basic passive solar power system, here sun rays pass through glass windows but there is no way to leave the heat out. Interiors in the building absorb the heat and when sun set down, that energy starts releasing to provide heat to building. It is a good to cut heating cost of house or any building.
Passive solar heating collectors:
As we described earlier that south facing models are used in buildings to install passive solar system. They are basically used to capture heat released from sun and is captured by solar panels. In this system the basic law of thermodynamics is used, under this law heat moves towards cool surface from warm space. Convection is the obvious method use for this purpose. Energy stored in collectors is released at night time when sun is there and there is no natural source of getting heat in winters.
Passive solar shading: this system can be used in different ways and one of them is use of fixed shading devices. Use of these shades increase the solar access to panels around the year and will help us in fulfilling your requirements. It is important to go through orientation process before installing in and knowing about effectiveness and this system.
You can also use adjustable shades in your building, if you think that sun rays do not stay on one centralized areas for most of the times. Correct design can make simple devices get most for you with efficiency.
Convection and radiative heat transfer: convection heat transfer is beneficial to use in these systems, as they control poor ventilation issues and heat loss that happens in winter mostly. Through these you can enhance cross ventilation and summer cooling to enjoy most comfortable temperate in your room. This heat transfer also control humidity issues with energy recovery ventilation systems.
Radiative heat transfer also help while designing passive solar heating system. it is the main source to transfer heat from one place to another with ease. Natural solar radiation takes place through roods and windows but never through walls. Is help energy to move from warm to cool place, and this is the basic purpose of using this system.