He was exposed via Unitarian Universalism to a diversity of religious faiths during his upbringing. His mother, Hannah was a visual artist. He has one sibling, his sister Enid. Kurzweil decided he wanted to be an inventor at the age of five.
A New Ki nd of Technology Since electricity is four times as expensive as natural gasfew sane Americans would heat their homes with electricity, but it happens. I have lived in homes heated with electric heaters several times, mainly because of all the hydroelectric projects in Washington State.
When I lived in New Jersey, my apartment had electric heat. Gas furnaces cost thousands of dollars, while electric heaters cost a small fraction of that. Electric lines run in places where gas lines are too difficult to install. Gas has its dangers, such as explosions and asphyxiation reduced because artificial scent is added to natural gas, so leaks are easily detected in the home.
Electricity has its hazards, such as electrocution and radiation from high voltage lines. Millions of homes have heat pumps. If a heat pump can average a COP of two, then it would be twice as efficient as using that electricity to run space heaters. Wh y are any heat pumps sold in the United States, if electricity is four times as expensive as natural gas?
If a heat pump averages a COP of two, then electricity is still twice as expensive as burning natural gas for heat.
There are regional variations in electric and gas prices, which can make the relationship closer, however. In addition, there are variables in the economics of producing electricity. For instance, the electricity production infrastructure is geared toward meeting peak demand.
At night and in the winter, demand can slacken dramatically. There are technical and practical issues with turning on and off electric company steam turbines.
Electric company turbines run all the time, but idle during off-peak hours. Electric companies have long encouraged businesses to use electricity at off peak hours, and do so with preferential pricing. For instance, in the early 20th century, the Niagara Mohawk electric company charged more than 17 cents per kilowatt-hour kWh at peak times, and less than four cents per kWh on off peak.
Also, if a home or business uses electricity for heating, electric companies can give preferential pricing. What if heat pumps could get COPs of eight? Then heat pumps could operate at half the operating cost of natural gas furnaces.
A diagram of a standard air-to-air heat pump is presented below. Heat pumps are often used to both heat and cool homes. In the winter they pump heat into the home, and in the summer they pump heat out of the home for air conditioning.
To work as an air conditioner in the summer, heat pumps need be placed in the shade, often next to the house. Being in the shade helps for the summer, but hinders winter performance. The cowboy did not know how the heat pump worked and called an engineer friend of his to come over and explain it.
The engineer showed that it was like a refrigerator. The cowboy understood, and asked: Then I would not want a heat pump sitting in the shade, but sitting in the sunshine. If I put that heat pump on the roof of my house, I bet it would operate more efficiently.
They hooked up some gauges, and before that heat pump virtually exploded, they obtained some amazing data. For producing heat, much higher efficiencies could be produced by placing the heat pump in sunlight.
The solar indu stry in America was already growing in response to the energy crisis, and an instance of serendipity happened.
Below are evaporator arrays on LamCo-style units in the field. Note the large, flat surface area. The LamCo-style evaporator, in an eight-panel array, provided about square feet of surface area contact with the environment.The accident rates can be lowered considerably if the legal driving age is bumped up to eighteen.
This would mean that no more kids could get hurt or worse, killed in a car accident. Despite the fact that it is illegal in Australia to use your mobile phone whilst driving, as it is a distraction, one in three (34%) of teenagers between the ages of have texted whilst driving.
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