Cambodia Calling: Tankless water heaters

Friday, September 04, 2009

Tankless water heaters

Photo of tankless water heater from Wikipedia. This is the way we heat water in homes in Cambodia and in Singapore and I have never experienced any problems of hot water running out, which apparently is the main concern for US home owners.

"They look at the unit, and it's so small compaired to a tank water heater, and they can't comprehend that it will produce enough hot water for them to take multiple showers at a time," EZ Tankless employee Mike Pavuk told wlfi.com. Pavuk adds "tankless technology has been around for 50 years, but it hasn't been widely available in the United States."

Instead, homes in the US typically use the storage water heater system (Drawing and text from the US Dept of Energy, linked here):

"It operates by releasing hot water from the top of the tank when you turn on the hot water tap. To replace that hot water, cold water enters the bottom of the tank, ensuring that the tank is always full. Because water is constantly heated in the tank, energy can be wasted even when a hot water tap isn't running. This is called standby heat loss. Only tankless water heaters—such as demand water heaters and tankless coil water heaters—avoid standby heat losses."

The US Department of Energy says tankless or demand water heaters are up to 24%–34% more energy efficient than conventional storage tank water heaters. This is how the tankless system works:

"When a hot water tap is turned on, cold water travels through a pipe into the unit. Either a gas burner or an electric element heats the water. As a result, demand water heaters deliver a constant supply of hot water. You don't need to wait for a storage tank to fill up with enough hot water. However, a demand water heater's output limits the flow rate."

To encourage home owners to switch, the US federal government offers a 30% tax credit for people who purchase a tankless water heater, according to the wlfi.com article linked above.

No comments:

Subscribe to: Post Comments (Atom)

Some argue that "Shopping is more important than voting", and that the disposition of money is the most basic role we play in any system of economics. Some theorists believe that it is the clearest way that we express our actual moral choices, i.e., if we say we care about something but continue to buy from parties that have a high probability of risk of harm or destruction of that thing, we really don't care about it; we are practicing a form of simple hypocrisy." - Ethical Consumerism, Wikipedia

THE BLOOM MANIFESTO

1. We believe in the right of all people to a decent life, free of poverty and with access to education

2. We believe you will be enriched helping the poor

3. We believe women hold up half the sky

4. We believe workers should always be paid a fair wage

5. We believe if you knew the truth, you would not be an accessory to the exploitation of workers

6. We believe exploitation is evil

7. We believe in the power of good over evil

8. We believe in the power of the individual to bring about change

9. We believe your bag is a reflection of you - are you really a sheep?

10. We believe quality is worth paying for

11. We believe in love at first sight - at least where our bags are concerned!

12. We believe in life, liberty and the pursuit of handbags!

WHAT IS A SOCIAL ENTERPRISE?

A social enterprise has as its central objective, a social or environmental purpose, and not the obsession with profits. Yes, of course we want to be profitable, but it is so we can hire even more people in unfortunate circumstances, and offer them a shot at a better life, and not because we want to "increase shareholder value" or for the sake of lining our personal pockets. In fact, the only foreign staff (and founder/funder) does not get a salary from Bloom.

At Bloom, our mission is to alleviate poverty and save the environment at the same time, through our recycled bags.

As a social enterprise in Cambodia, we are competing with many NGOs on the one hand (which get donations) and for want of a better word, capitalistic businesses (which drive down costs in an effort to maximise profits). We recognise and accept the challenges that face all business, but are committed to principles of Fair Play, and will NEVER sacrifice those principles in order to be competitive. This means, for instance, we will never sacrifice workers' pay just so our bags will be cheaper. The average pay at Bloom today is 2.13 times the market rate.

So please, before you ask us to discount our bags, remember that we are not a minimum wage factory; we are a social enterprise. If you want a cheap factory-made bag, Bloom is not what you are looking for. If you agree that workers (where-ever they are--Singapore, Germany, France, the US) should always be paid fairly and are not here to produce goods and services at low wages for the profit of big business, then please consider Bloom. Bloom bags are all hand-made by our small team who spend our working hours dreaming up and making bags.

All Bloom profits go to our Khmer staff and to growing Bloom. Ultimately the aim is for Bloom to be a workers' cooperative, where workers own, manage, grow the business and share the profits.

WHO WE ARE

Bloom is a social enterprise established in Sept 2006 with the intention of providing fair-paying jobs to abandoned, widowed and divorced Cambodian women. Bloom is not a factory. We are a small workshop of nine people who work closely as a team to produce original, quality handmade bags made from recycled rice and fish feed bags.

Every Bloom Bag is meticulously designed, cut, glued and sewn by the Bloom team in our workshop in Phnom Penh. Each bag is handmade with love and attention to detail (the Bloom team really enjoys making bags!), resulting in beautiful, unique bags we are sure you will love and your friends will want!

All Bloom Bags are handmade by our team. We do not outsource to other sewers because we want to be in control of the supply chain, to ensure that everyone involved in making a Bloom Bag is paid fairly. There is no middleman taking a cut and passing on the work to another.

Please Visit Bloom's new workshop off Norodom Boulevard in Phnom Penh and our retail outlets. Bloom is next to Warehouse Pub in the Old Market Area in Siem Reap and at No.808 Russian Market, Phnom Penh.