admin answers:

Many many careers can deal with renewable energy..

Try civil, mechanical, electrical or chemical engineering.

admin answers:

Yup, Solar Electric Company Inc. Www.solarelectric.com.ph. This is for personal use–I do not know about selling back excess energy. Renewable energy is not very popular/common yet, I would assume namely due to the initial layout for the panels, etc.

There is also a Solarhart distributor here but I misplaced the business card.

admin answers:

Peak oil is real, and so is global warming, but your teacher is a fool or you have misunderstood

It is already possible to convert coal to oil, at a price not much greater than the current market price of oil. The main problem, however, apart from cost, is that this means roughly twice as much CO2 per barrel of oil.

Your teacher seems completely unaware of what is being done to find alternative sources of energy, from nuclear to solar to wind to the best alternative altogether, conservation.

See “sustainable energy – without the hot air” Dvd C Mackay, physics professor, Cambridge. Google the title for a free download.

admin answers:

Every time you open a refrigerator door, the cold air inside it falls out and is replaced by warm air. This is because hot air rises and cold air falls. So anything you can do to reduce the amount of free-flowing air inside your refrigerator will save you energy.

Also the air that comes in carries humidity, which the refrigerator has to expend energy to extract from the air. (That’s why you should never leave uncovered foods or liquids in the fridge. Not only will you ruin their taste but you add to the refrigerator’s workload.) So again, reducing the open airspace will help.

You can use empty upright milk jugs or pop bottles to take up the space. You could use styrofoam or packing peanuts too but you do want to maintain good airflow within the refrigerator, otherwise it won’t cool properly and some areas will get close to freezing while others stay warm. Since bottles have air spaces between them even in a fully packed fridge, this provides a good level of space-filling without impeding air flow.

Of course, you might want to think about how environmentally sustainable it is to keep a fridge for nothing but a keg of beer. Given the current concern over climate change and the fact that much of our electricity is generated from coal, anything we can do to cut our energy use is going to help. But I do congratulate you for using a relatively new fridge – they are much more efficient than even ten-year-old fridges, and there’s not much that is more wasteful than a 20+ year old fridge kept in the basement just to store beer. With your newer fridge and your attempts to restrict air escape, you really won’t be using that much power to keep your beer cool.