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Power cost of idle electric water heater
On 31-Mar-2004, Neon John wrote: Just ignore Roland. He just likes to hear himself type and throw out fancy terms. Doesn't have a clue. Your measurements were right on target. Even the temperature selected. The water heater I recently installed in one of my cabins came from the Home Depot with the 'stats set at 115 deg F. Probably the lawyers at work again. I bet just about nobody changes that setting. Even Roland's appreciation of the "big picture" is incorrect. Yes, Roland's "big picture" is incorrect. The problem with European environmentalists like him is that they are cultural imperialists: They want to impose their standard of living, cars, energy generation, insulation, house sizes, lighting and room temperatures on all other cultures. They even have standards for family size. I could care less whether he rides a bicycle or drives a Mercedes, but it really bothers him that I drive a SUV and have 200 watts of light in my office. But what's worse is that if he had the opportunity, he would impose his political/environmental/social policy on the whole world. "Liberals" are only tolerant of other liberals; they are dogmatic and unwilling to accept those who prefer different lifestyles. |
Power cost of idle electric water heater
On 31-Mar-2004, Neon John wrote: Just ignore Roland. He just likes to hear himself type and throw out fancy terms. Doesn't have a clue. Your measurements were right on target. Even the temperature selected. The water heater I recently installed in one of my cabins came from the Home Depot with the 'stats set at 115 deg F. Probably the lawyers at work again. I bet just about nobody changes that setting. Even Roland's appreciation of the "big picture" is incorrect. Yes, Roland's "big picture" is incorrect. The problem with European environmentalists like him is that they are cultural imperialists: They want to impose their standard of living, cars, energy generation, insulation, house sizes, lighting and room temperatures on all other cultures. They even have standards for family size. I could care less whether he rides a bicycle or drives a Mercedes, but it really bothers him that I drive a SUV and have 200 watts of light in my office. But what's worse is that if he had the opportunity, he would impose his political/environmental/social policy on the whole world. "Liberals" are only tolerant of other liberals; they are dogmatic and unwilling to accept those who prefer different lifestyles. |
OT: Supercritical Fossil Plants
In article ,
Neon John wrote: Even Roland's appreciation of the "big picture" is incorrect. Modern supercritcal fossil plants achieve overall efficiencies in the 50% range. Even the good old nuke are in the high 30s. The Sequoyah Nuclear Plant where I worked for about 10 years recently replaced the steam generators. The improved design plus some plant upgrades pushed the efficiency to 38% and a fraction, something that spawned a small staff party. Oh, and BTW, Roland, the waste heat goes up the cooling tower stacks and not into the lake, at least not to any significant extent. Much to the chagrin of local fishermen who discovered that the warm water (pre-cooling towers) spawned great fish growth and fishing conditions. John De Armond Depending on *how* it's measured, efficiency can be higher. Back in '70, I worked as a co-op at the Eddystone plant (Philly area), then arguably the most efficient plant in the world -- only the USSR supposedly had a better one. Steam started at 4,999.5 psi according the gauge, ended in partial vacuum. They burned (actually closer to exploded) 1-200 tons of coal an hour and we STILL needed heaters in the "basement" labs in the winter. [yes, we had walls ;-)] They only used the gas turbines (jet engines) in the yard when absolutely necessary, because their efficiency was so low. By each measure, efficiency was pretty high. But are they making plants like that any more? When they built units 3 & 4, they went back to a "mere" 1-2000 psi. AFAIK, only one supercritical production nuke was built: Peachbottom. -- Jere Lull Xan-a-Deux ('73 Tanzer 28 #4 out of Tolchester, MD) Xan's Pages: http://members.dca.net/jerelull/X-Main.html Our BVI FAQs (290+ pics) http://homepage.mac.com/jerelull/BVI/ |
OT: Supercritical Fossil Plants
In article ,
Neon John wrote: Even Roland's appreciation of the "big picture" is incorrect. Modern supercritcal fossil plants achieve overall efficiencies in the 50% range. Even the good old nuke are in the high 30s. The Sequoyah Nuclear Plant where I worked for about 10 years recently replaced the steam generators. The improved design plus some plant upgrades pushed the efficiency to 38% and a fraction, something that spawned a small staff party. Oh, and BTW, Roland, the waste heat goes up the cooling tower stacks and not into the lake, at least not to any significant extent. Much to the chagrin of local fishermen who discovered that the warm water (pre-cooling towers) spawned great fish growth and fishing conditions. John De Armond Depending on *how* it's measured, efficiency can be higher. Back in '70, I worked as a co-op at the Eddystone plant (Philly area), then arguably the most efficient plant in the world -- only the USSR supposedly had a better one. Steam started at 4,999.5 psi according the gauge, ended in partial vacuum. They burned (actually closer to exploded) 1-200 tons of coal an hour and we STILL needed heaters in the "basement" labs in the winter. [yes, we had walls ;-)] They only used the gas turbines (jet engines) in the yard when absolutely necessary, because their efficiency was so low. By each measure, efficiency was pretty high. But are they making plants like that any more? When they built units 3 & 4, they went back to a "mere" 1-2000 psi. AFAIK, only one supercritical production nuke was built: Peachbottom. -- Jere Lull Xan-a-Deux ('73 Tanzer 28 #4 out of Tolchester, MD) Xan's Pages: http://members.dca.net/jerelull/X-Main.html Our BVI FAQs (290+ pics) http://homepage.mac.com/jerelull/BVI/ |
Power cost of idle electric water heater
The EPA average national power rate is 8 cents per KWH. So, using the EPA
power rate, the cost of keeping the idle water heater hot is 13.35 cents/day or $4.00/month or $48.73/year. Phil, Thanks for the complete info. I'm MORE than willing to pay $49/yr so I can have hot water when I turn the handle. The losses must be a bit larger with a 6 gal RV water heater but it is sure nice to have hot water! Based on your data it'd probably take quite a while to recover the cost of an "instantaneous" heater. I'll wait 'til my old fashioned one fails before looking at greater efficiency. I recently did some cold weather camping & was surpised at how little I missed the hot water. I guess the new detergents are much better than soap for getting things clean with cold water. Thanks again and please continue to report useful data. Ignore those who turn every posting into some kind of ideological argument (they are ideots!) |
Power cost of idle electric water heater
The EPA average national power rate is 8 cents per KWH. So, using the EPA
power rate, the cost of keeping the idle water heater hot is 13.35 cents/day or $4.00/month or $48.73/year. Phil, Thanks for the complete info. I'm MORE than willing to pay $49/yr so I can have hot water when I turn the handle. The losses must be a bit larger with a 6 gal RV water heater but it is sure nice to have hot water! Based on your data it'd probably take quite a while to recover the cost of an "instantaneous" heater. I'll wait 'til my old fashioned one fails before looking at greater efficiency. I recently did some cold weather camping & was surpised at how little I missed the hot water. I guess the new detergents are much better than soap for getting things clean with cold water. Thanks again and please continue to report useful data. Ignore those who turn every posting into some kind of ideological argument (they are ideots!) |
Supercritical Fossil Plants
"Jere Lull" wrote in message ... In article , Neon John wrote: Even Roland's appreciation of the "big picture" is incorrect. Modern supercritcal fossil plants achieve overall efficiencies in the 50% range. Even the good old nuke are in the high 30s. The Sequoyah Nuclear Plant where I worked for about 10 years recently replaced the steam generators. The improved design plus some plant upgrades pushed the efficiency to 38% and a fraction, something that spawned a small staff party. Oh, and BTW, Roland, the waste heat goes up the cooling tower stacks and not into the lake, at least not to any significant extent. Much to the chagrin of local fishermen who discovered that the warm water (pre-cooling towers) spawned great fish growth and fishing conditions. John De Armond Depending on *how* it's measured, efficiency can be higher. Back in '70, I worked as a co-op at the Eddystone plant (Philly area), then arguably the most efficient plant in the world -- only the USSR supposedly had a better one. Steam started at 4,999.5 psi according the gauge, ended in partial vacuum. They burned (actually closer to exploded) 1-200 tons of coal an hour and we STILL needed heaters in the "basement" labs in the winter. [yes, we had walls ;-)] They only used the gas turbines (jet engines) in the yard when absolutely necessary, because their efficiency was so low. By each measure, efficiency was pretty high. But are they making plants like that any more? When they built units 3 & 4, they went back to a "mere" 1-2000 psi. AFAIK, only one supercritical production nuke was built: Peachbottom. Indian Point I (long shutdown now) was a nuke that used the reactor to make saturated steam, then used an oil-fired superheater to superheat the steam. Not sure how hot it ran, but pressure was only about 1000 psi (due to the limits of the nuke's steam-generator). In recent past, the industry has been going for combined-cycle gas-turbine. Less pollution controls needed and overall cycle efficiencies running close to 60%. But this has raised demand on natural gas, so that price has started to climb and things are shifting once again. daestrom |
Supercritical Fossil Plants
"Jere Lull" wrote in message ... In article , Neon John wrote: Even Roland's appreciation of the "big picture" is incorrect. Modern supercritcal fossil plants achieve overall efficiencies in the 50% range. Even the good old nuke are in the high 30s. The Sequoyah Nuclear Plant where I worked for about 10 years recently replaced the steam generators. The improved design plus some plant upgrades pushed the efficiency to 38% and a fraction, something that spawned a small staff party. Oh, and BTW, Roland, the waste heat goes up the cooling tower stacks and not into the lake, at least not to any significant extent. Much to the chagrin of local fishermen who discovered that the warm water (pre-cooling towers) spawned great fish growth and fishing conditions. John De Armond Depending on *how* it's measured, efficiency can be higher. Back in '70, I worked as a co-op at the Eddystone plant (Philly area), then arguably the most efficient plant in the world -- only the USSR supposedly had a better one. Steam started at 4,999.5 psi according the gauge, ended in partial vacuum. They burned (actually closer to exploded) 1-200 tons of coal an hour and we STILL needed heaters in the "basement" labs in the winter. [yes, we had walls ;-)] They only used the gas turbines (jet engines) in the yard when absolutely necessary, because their efficiency was so low. By each measure, efficiency was pretty high. But are they making plants like that any more? When they built units 3 & 4, they went back to a "mere" 1-2000 psi. AFAIK, only one supercritical production nuke was built: Peachbottom. Indian Point I (long shutdown now) was a nuke that used the reactor to make saturated steam, then used an oil-fired superheater to superheat the steam. Not sure how hot it ran, but pressure was only about 1000 psi (due to the limits of the nuke's steam-generator). In recent past, the industry has been going for combined-cycle gas-turbine. Less pollution controls needed and overall cycle efficiencies running close to 60%. But this has raised demand on natural gas, so that price has started to climb and things are shifting once again. daestrom |
Supercritical Fossil Plants
Indian Point was an efficiency disaster from the start-up. Probably
due to the inability of the main turbine condensers from operating down to 1" hg. absolute. No one ever found out why the plants thermo cycle was so way 'out of whack'. Suggestions were posed but never proved that the condensation on the condenser tubes was not film-wise condensation but some sort of 'wierd' drop-wise or mixture condensation ..... and no one ever found out why. In article , daestrom wrote: "Jere Lull" wrote in message ... In article , Neon John wrote: Even Roland's appreciation of the "big picture" is incorrect. Modern supercritcal fossil plants achieve overall efficiencies in the 50% range. Even the good old nuke are in the high 30s. The Sequoyah Nuclear Plant where I worked for about 10 years recently replaced the steam generators. The improved design plus some plant upgrades pushed the efficiency to 38% and a fraction, something that spawned a small staff party. Oh, and BTW, Roland, the waste heat goes up the cooling tower stacks and not into the lake, at least not to any significant extent. Much to the chagrin of local fishermen who discovered that the warm water (pre-cooling towers) spawned great fish growth and fishing conditions. John De Armond Depending on *how* it's measured, efficiency can be higher. Back in '70, I worked as a co-op at the Eddystone plant (Philly area), then arguably the most efficient plant in the world -- only the USSR supposedly had a better one. Steam started at 4,999.5 psi according the gauge, ended in partial vacuum. They burned (actually closer to exploded) 1-200 tons of coal an hour and we STILL needed heaters in the "basement" labs in the winter. [yes, we had walls ;-)] They only used the gas turbines (jet engines) in the yard when absolutely necessary, because their efficiency was so low. By each measure, efficiency was pretty high. But are they making plants like that any more? When they built units 3 & 4, they went back to a "mere" 1-2000 psi. AFAIK, only one supercritical production nuke was built: Peachbottom. Indian Point I (long shutdown now) was a nuke that used the reactor to make saturated steam, then used an oil-fired superheater to superheat the steam. Not sure how hot it ran, but pressure was only about 1000 psi (due to the limits of the nuke's steam-generator). In recent past, the industry has been going for combined-cycle gas-turbine. Less pollution controls needed and overall cycle efficiencies running close to 60%. But this has raised demand on natural gas, so that price has started to climb and things are shifting once again. daestrom |
Supercritical Fossil Plants
Indian Point was an efficiency disaster from the start-up. Probably
due to the inability of the main turbine condensers from operating down to 1" hg. absolute. No one ever found out why the plants thermo cycle was so way 'out of whack'. Suggestions were posed but never proved that the condensation on the condenser tubes was not film-wise condensation but some sort of 'wierd' drop-wise or mixture condensation ..... and no one ever found out why. In article , daestrom wrote: "Jere Lull" wrote in message ... In article , Neon John wrote: Even Roland's appreciation of the "big picture" is incorrect. Modern supercritcal fossil plants achieve overall efficiencies in the 50% range. Even the good old nuke are in the high 30s. The Sequoyah Nuclear Plant where I worked for about 10 years recently replaced the steam generators. The improved design plus some plant upgrades pushed the efficiency to 38% and a fraction, something that spawned a small staff party. Oh, and BTW, Roland, the waste heat goes up the cooling tower stacks and not into the lake, at least not to any significant extent. Much to the chagrin of local fishermen who discovered that the warm water (pre-cooling towers) spawned great fish growth and fishing conditions. John De Armond Depending on *how* it's measured, efficiency can be higher. Back in '70, I worked as a co-op at the Eddystone plant (Philly area), then arguably the most efficient plant in the world -- only the USSR supposedly had a better one. Steam started at 4,999.5 psi according the gauge, ended in partial vacuum. They burned (actually closer to exploded) 1-200 tons of coal an hour and we STILL needed heaters in the "basement" labs in the winter. [yes, we had walls ;-)] They only used the gas turbines (jet engines) in the yard when absolutely necessary, because their efficiency was so low. By each measure, efficiency was pretty high. But are they making plants like that any more? When they built units 3 & 4, they went back to a "mere" 1-2000 psi. AFAIK, only one supercritical production nuke was built: Peachbottom. Indian Point I (long shutdown now) was a nuke that used the reactor to make saturated steam, then used an oil-fired superheater to superheat the steam. Not sure how hot it ran, but pressure was only about 1000 psi (due to the limits of the nuke's steam-generator). In recent past, the industry has been going for combined-cycle gas-turbine. Less pollution controls needed and overall cycle efficiencies running close to 60%. But this has raised demand on natural gas, so that price has started to climb and things are shifting once again. daestrom |
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