iida 2010: green heart

so cool! solar cooler

so cool! solar cooler by arash aharpour from denmark

designer's own words:

So cool! Solar cooler

Making chill using solar energy is not a new idea. Lots of efforts have done before. Most efficient system currently in use is using solar collectors to warm up a liquid and use it to minimize energy consumption of absorption chillers. The other idea is converting suns energy to electrical energy using photovoltaic (PV) systems and then using it in ordinary air conditioning systems. First method is more efficient but it is useful for big buildings with huge air conditioning systems and second is extremely expensive yet. Maximum solar energy received by each square meter of ground on earth is around 1350 Watts per hour. Converting light energy to electrical form using PV systems is maximum 47% efficient and need to 4.15 US$ investment per watt. This it too much for a bus stop, an out door restaurant in tropical areas, a ticketing or police kiosk and lots of urban and public spaces. So cool! Is a green and renewable energy based idea for cooling purpose in hot and sunny climates. New cooling systems increased the expectancy of people in these areas and also the electrical energy consumption which means generating more and more heat and carbon dioxide to produce electric power. So cool! Works based on transferring the heat from a place to another as a thermodynamic machine. It do not convert light energy to electricity, instead it just absorbs sun’s heat and use the heat in boiler part of an Ammonia based refrigeration system such as propane refrigerator. When it rains canals conduct water to increase the cooling efficiency of condenser to minimize the effect of lack of heat energy caused by clouds. A small photovoltaic panel prepares required energy for pumping coolant liquid to evaporator, fan and night LED light. So cool is just made of maintenance free and inexpensive parts to make it affordable for every one in hot climates! Out door markets and restaurant are a part of tropical and south East Asian countries’ culture. Many people these days ask for air conditioning in these traditional restaurants. By using so cool! Instead of ordinary roofing panels covered area cools for free in warm hours of day time and equips with LED light and fan during night without electricity power supply. So cool! transfers heat from covered area to outer space using ammonia liquid and gas circuit powered by solar heat. Due to simplicity of particles require investment is significantly less than PV.

save environment + culture

copy_2095_2.jpg usage

copy_1772_3.jpg how it works?

    have something to add? share your thoughts in our comments section below.
    all comments are reviewed for the purposes of moderation before publishing.

    comments policy
    LOG IN
    designboom's comment policy guidelines
    generally speaking, if we publish something, it's because we're genuinely interested in the subject. we hope you'll share this interest and if you know even more about it, please share! our goal in the discussion threads is to have good conversation and we prefer constructive opinions. we and our readers have fun with entertaining ones. designboom welcomes alerts about typos, incorrect names, and the like.
    the correction is at the discretion of the post editor and may not happen immediately.

    what if you disagree with what we or another commenter has to say?
    let's hear it! but please understand that offensive, inappropriate, or just plain annoying comments may be deleted or shortened.

    - please do not make racist, sexist, anti-semitic, homophobic or otherwise offensive comments.
    - please don't personally insult the writers or your fellow commenters.
    - please avoid using offensive words, replacing a few letters with asterisks is not a valid workaround.
    - please don't include your website or e-mail address in your comments for the purpose of self-promotion.
    - please respect jury verdicts and do not discuss offensively on the competition results
    (there is only one fist prize, and designboom usually asks renown professionals to help us to promote talent.
    in addition to the awarded designs, we do feel that almost all deserve our attention, that is why we publish
    the best 100-200 entries too.)

    a link is allowed in comments as long as they add value in the form of information, images, humor, etc. (links to the front page of your personal blog or website are not okay). unwelcome links (to commercial products or services of others, offensive material etc. ) will be redacted. and, ... yes, spam gets banned. no, we do not post fake comments.

    shortlisted entries

    keep up with our daily and weekly stories
    504,284 subscribers
    - see sample
    - see sample