Many parts of the world, such as third world countries, remain challenged when it comes to water supply, but they might not have to deal with this problem for long. A relatively new invention known as the atmospheric water generator makes it so that people in areas affected by water crisis tap into the huge amounts of water that is in the air. Water generated can then be used to quench the thirst of civilians and even to operate business operations. There are certainly many benefits to utilizing air-water makers.
Renewable energy solutions are derived from naturally occurring sources that can be replenished. This includes solar, geothermal, wind and hydroelectric power. In contrast, non-renewable energy sources such as coal and oil are derived from materials that can run out once they have been extracted and used in different applications. Renewable energy is clean or green energy since it is considered environmentally friendly and does not produce pollution.
This is a successful example of a MultiChill Technologies CCHP installation utilizing waste heat. The video shows the system operating over a 10 year period.
Cooling Technologies, Inc. (now a partner in MultiChill Technologies, Inc.) approached SoCal Gas with a proposal to demonstrate a 5 RT Gas Air Conditioner unit in the field. SoCal desired a third party evaluation of the unit to ensure it would perform as specified in the field. SoCal’s performance testing was conducted at their Energy Resource Center Laboratory in California. SoCal issued the Summary charts shown here which demonstrate the above specification performance of the unit when comparing Cooltec’s figures (red) against the test laboratory findings (blue).
“The Cooltec unit is the first product that we have tested in our laboratory that performed above the manufacturer’s specifications” – SoCal Energy Engineer
Summary and Performance
• SoCal Energy Lab
• Cooltec 5RT
• Capacity and Endurance
• Efficiency at High Ambient
• +10% Performance vs Specifications
• 15% Downrate at 45degC
Client: Government Educational Institution in Australia (Click Here to View Photos)
Key Project Statistics:
- Electricity is generated on-site 24×7 at $0.175/kWh saving almost $0.20/kWh compared to grid supplied
- Estimated Annual CO2 Savings: 350 tonnes
- Estimated Annual Savings: $100,000 +
- Estimated Payback: 4.5 years
- Gas Consumption:
- 888MJ/Hour (MircoTurbine)
- 94MJ/Hour (Each Absorption Chiller – ‘*if required’)
- * The chillers exclusively use waste heat from the Micro-Turbine.
- * Free cool air conditioning save electricity normally required to do so.
- *Free heating saves the electricity normally required to do so.
- * Water generation from the air also save electricity if required to do so.
Project Description: Replace a highly inefficient HVAC system. Install a MultiGen system to meet HVAC requirements, generate on-site power to supplement existing grid load, produce water to supplement irrigation and provide air conditioning. Decommission and remove old equipment including a vapour compressor, condensers, air handling unit and electric duct re-heaters.
Project Installation Contractor: Stallion Air Conditioning Sydney, Australia
MultiGen Model: MultiGen65 90kWr – Power, Hot Water, Chilled Water, Air Conditioning and Water from the Air
MultiGen System Installed: MicroTurbine with Integrated Heat Recovery Unit (left). Waste Heat Absorption Chillers (centre), Electric Chiller and Water Maker Air Handling Unit (right)
- Electricity Generation
- Hot Water and Chilled Water Production,
- Air Conditioning and Water Making from the Air
- Hourly Electricity Consumption of Plant: 60-90 kW (Higher energy consumption when 5 electric duct mounted reheaters were in operation)
- HVAC Capacity Requirement: 90kW
- Plant Consumption: 20kW
- On-site Electricity Generation from MicroTurbine: 60kW usable
- Free Cooling from Waste Heat Chillers: 34 kWt
- Free Heating from Waste Heat Recovery Unit: 34 kW
- Additional Electric Chiller: 56 kWt
- Noise Level: <65Dba
- MicroTurbine Emissions Data: 15% O2 NOX4-9ppm , C0-30ppm
- Absorption Chiller Emissions: 6.5% O2, CO-30ppm, 8.2% CO2, Ratio: 0.0004
MultiGen system comprises of:
- 1 x 65kW Gas Powered MicroTurbine with an Integrated Heat Recovery Unit and Gas Compressor
- 1 x Hot Water Heating Coil fitted to the A/C Ducting, Expansion Tank and Roof Mounted Dump Cooler
- 1 x Dual Mode Controller for Grid Connect or Standalone Operation of the MicroTurbine
- 2 x 17kWr Dual Fired (Waste Heat and Gas) Air-Cooled Absorption Chillers with Buffer and Expansion Tanks
- 1 x 34kW Water Maker Air Handler
- 1 x 56 kWt Air-Cooled Electric Chiller with Buffer and Expansion Tanks
- 1 x 56 kW Water Maker Air Handler
- 3 x Wafer Style Flue Valves with Actuators to Control Waste Heat
MultiGen System Operation Overview
The MicroTurbine is supplied with natural gas and generates 65kW of electricity 24 hours a day and has 60kW usable. The electricity generated supplements the Institute’s business hours electricity supply grid load of 140kW and provides all electricity out of business hours approximately 50kW per hour. The MircoTurbine is connected to the Institute’s Building Management System to enable load-following and monitoring of gas consumption and electricity generation. The MicroTurbine has the capacity to operate, via the Dual Mode Controller, to follow a load of Stand Alone in the event of a grid failure.
The waste heat from the MicroTurbine is used to heat water through the integrated Heat Recovery Unit for 34kWt of space heating. When cooling is required the waste heat is used to initiate chilled water from the Absorption chillers for 34kWt of space cooling. The electric chiller provides the additional 56kWt of cooling and heating required.
If heating or cooling isn’t required the waste heat is exhausted to atmosphere. The Water Maker Air Handler units make 5 litres of water per hour per 3.6kW of cooling capacity when the temperature is 27c with relative humidity of 60%. The Water Maker Air Handler’s water production capacity varies according to local climatic conditions and can be set to operate at different time of the day or night via a timer.
The Absorption Chillers are dual fired, air-cooled and use ammonia as the refrigerant. They have 3 modes of operation:
- • Waste heat only
- • Natural gas only
- • Waste Heat and Natural Gas
If the MicroTurbine is not operational the chillers will fire automatically on natural gas and continue operation. The MicroTurbine normally provides the necessary waste heat for the chillers. Up to 4 Chillers can be coupled to one 65 kW Capstone MicroTurbine. In the event that the waste heat is insufficient natural gas is used to maintain the desired operational temperature of the Chillers hence duel fired terminology.
All components require minimal maintenance. The gas appliances that form part of MultiGen system, the MicroTurbine and Absorption Chillers, have been inspected and certified that they comply with the strict Australia standards specifically:
- • AS 3814 – Gas Appliances and,
- • AS 4625 – Electronic Flame Safeguards and Flame Detectors.
As we continue to pollute our waters, less fresh water is becoming available for us to drink. More rivers, lakes, and underground aquifers are drying up as the years pass. As bodies of water around the world continue to dry up, we’re seeing more drought conditions spread. There are dust storms in places which have never experienced them until now. As time flows, the amount of agricultural land shrinks, and deserts are growing.
Here are some of the signs of an upcoming global water crisis and some links you may be interested in reading.
#1 It is being projected that by the year 2030, global demand for water will be 40 percent higher than it is today.
#2 Worldwide demand for fresh water tripled during the last century, and is now doubling every 21 years.
#3 According to USAID, one-third of the population of the earth will be facing severe or chronic water shortages by the year 2025.
#4 Of the 60 million people added to the world’s cities every year, the vast majority of them live in impoverished areas that have no sanitation facilities whatsoever.
#5 It is estimated that 75 percent of the surface water in India is now contaminated by human and agricultural waste.
#6 If you can believe it, according to a UN study on sanitation, far more people in India have access to a cell phone than to a toilet.
#7 In the developing world, 90 percent of all wastewater is discharged completely untreated into local rivers, streams or lakes.
#8 Every 8 seconds, somewhere in the world a child dies from drinking dirty water.
#9 Due to a lack of water, Saudi Arabia has given up on trying to grow wheat and will be 100 percent dependent on wheat imports by the year 2016.
#10 In northern China, the water table is dropping one meter every single year because of drought and over pumping.
#11 Incredibly, a new desert the size of Rhode Island is created in China every single year because of drought and over pumping.
#12 In China, 80 percent of all major rivers have become so horribly polluted that they do not support any aquatic life at all at this point.
#13 Collectively, the women of South Africa walk the equivalent of the distance to the moon and back 16 times a day just to get water.
Click on the link below to read about our innovative energy solutions for cooling, heat, and power (CHP) for supermarkets another similar businesses. The MultiChill unit is a pre-engineered packaged product that integrates the microturbine, chillers, pumps, exhaust ducting and controls into one package that is installed behind or on top of a supermarket.
Refrigeration Subcooling – MultiChill MTI C6520T
Here are some photos of a installation we did at a high school in Canton. We have removed the side-plate of one of our units to view the interior. Our newer models have been upgraded on the inside.
QUEENSLAND’S worst drought in a century is hiding deeper policy failures in the agricultural sector that have devastated rural communities, an economist warns.
Speaking ahead of next weekend’s Sunday Mail Bush Forum in Longreach, Ben Rees says thousands of farmers are now in crisis, reeling from the cumulative effects of almost 50 years of flawed financial and political thinking. A dogmatic “bigger is better’’ theory, starting with consolidation of dairy farms, has driven property aggregations over decades, funded by high debt-to-equity bank loans. The number of farms in Australia has fallen by 30 per cent since 1973 to 128,917. But Mr Rees says the economies of scale did not translate into increased profitability as assumed. What benefits did flow were enjoyed by consumers in lower grocery costs as a result of retail monopolies, rather than by farmers through gate prices.
In 1972, when sector reform began, rural debt was half the gross value of farm production. By 1994, when a debt crisis sparked a Senate inquiry, it had risen to 69 per cent. The lessons were not learned and the ratio continued to rise to three-quarters in 2000, eventually peaking in 2010, when debt was 1½ times the total gross value of farm production. The only reason it levelled off since then, Mr Rees argued, was that rural lending flatlined, cancelled out by foreclosures and bankruptcies.
“It was always a question of when would it fail, and under what circumstances,’’ Mr Rees said. “That failure was exposed unceremoniously by the global financial crisis in 2008.’’ Farm land values have plummeted 40 per cent since the GFC, but the debts remain. “As banks moved to restructure rural portfolios, farmers financed in pre-GFC valuations found themselves technically insolvent,’’ Mr Rees said. Drought-management costs have added to producers’ woes. “Bank foreclosures have been subjected to confidentiality clauses, which have prevented rural financial stress from becoming public knowledge,’’ he said. The number of people working in farming has fallen 30 per cent in the past 40 years, while the national labour force overall has more than doubled. Young people have left in search of work, undermining rural communities and adding to high youth unemployment in urban areas.
Mr Rees, who runs a family farm at Miles, said many of the worst-hit farmers were not eligible for drought concessional loans under rules on long-term viability. But all major political parties continued to “conveniently hide behind drought’’ rather than address the underlying debt problems. The Federal Senate’s economic committee in March dismissed the establishment of an Australian Reconstruction and Development Board to restructure debt in dislocated industries, including agriculture. That means the onus is now on state governments to set up some sort of framework to help save the bush.
”This fuel bill is a heavy load to bear for telecoms companies financially and contributes to carbon emissions. In India alone during 2011 telecom tower sites consumed an estimated 3.2 billion liters of diesel fuel. At the current rate of expansion, that could reach 6 billion by 2020.
India is currently leading the way in installation and upgrading of off-grid sites to use alternative and renewable energy sources. The government in India heavily subsidizes diesel fuel and in an effort to reduce carbon footprint and reduce greenhouse emissions it has been mandated that 50% of rural sites be powered by renewable energy by 2015, and by 2020 75% of rural sites and 33% of urban sites should be switched over to green energy.”
There’s a major opportunity that exists to partner with cell phone tower manufacturers, installers, and off-grid facilities that use diesel power. The addition of a MultiGen system with utilized waste heat absorption to produce water from the air and cooling for the facility. Since to be used waste heat to power our unit both the water and air conditioning would be virtually free. The savings to both the company and country are substantial.