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EVSE questions

A major player in the EVSE market has kindly consented to provide some technical training for the electrical installation tutors at a training centre where I often tutor part-time. I imagine it is not entirely motivated by altruistic considerations but at least it gives an opportunity for the tutors and myself to get some kind of grasp on the various products on offer and where this particular manufacturer sees the direction of travel for EVSE. I am already aware that the company is moving away from products that rely on the installation of earth electrodes in PME situations and are placing considerable focus on load management. Is there any particular question that you would ask them given the opportunity?
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  • Hi Harry

    Yes, she may have suggested a Greenhouse effect, but Tindall and others following didn't realise that Greenhouses don't actually work that way, and the effect is not real! Polythene greenhouses cannot work that way and are just as effective as glass ones. The real greenhouse effect is to prevent convection of hot air upwards and to lessen the effect of wind. it is nothing to do with the wavelength of heat, it is simply heat loss control. Anyone would think that radiators in a house worked by radiation, they don't it is air convection over the surface. The LW IR electric heaters that make most use of heat radiation to warm us, not the surroundings, but the wavelength of them is very different from greenhouse glass transparency or not as you can see and feel.
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  • Hi Harry

    Yes, she may have suggested a Greenhouse effect, but Tindall and others following didn't realise that Greenhouses don't actually work that way, and the effect is not real! Polythene greenhouses cannot work that way and are just as effective as glass ones. The real greenhouse effect is to prevent convection of hot air upwards and to lessen the effect of wind. it is nothing to do with the wavelength of heat, it is simply heat loss control. Anyone would think that radiators in a house worked by radiation, they don't it is air convection over the surface. The LW IR electric heaters that make most use of heat radiation to warm us, not the surroundings, but the wavelength of them is very different from greenhouse glass transparency or not as you can see and feel.
Children
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