{"id":75635,"date":"2023-06-08T11:44:24","date_gmt":"2023-06-08T01:14:24","guid":{"rendered":"https:\/\/www.solarquotes.com.au\/blog\/?p=75635"},"modified":"2023-06-08T12:06:33","modified_gmt":"2023-06-08T01:36:33","slug":"raygen-and-alfa-laval","status":"publish","type":"post","link":"https:\/\/www.solarquotes.com.au\/blog\/raygen-and-alfa-laval\/","title":{"rendered":"RayGen and Alfa Laval Push the Limits of Solar Efficiency In Victoria"},"content":{"rendered":"

\"raygen<\/p>\n

RayGen is building a concentrator-style PV power plant in Victoria with thermal storage, and incredible claimed efficiency, and they’ve picked Alfa Laval to provide the heat exchangers.<\/p>\n

RayGen’s Self-Aligning Mirrors and ‘PV Ultra’ Solar Cell Array<\/h2>\n

The RayGen self-aligning mirrors concentrate sunlight onto a tower-mounted receiver containing the ‘PV Ultra’ solar cell array. All this concentrated sunlight uses the photovoltaic effect<\/a> to produce electricity from the PV cells at over 30% efficiency along with a lot of heat. That heat is not wasted but used to drive a Rankine cycle engine. The company claims the system’s total efficiency is 90%, with about 30% from concentrated PV and 60% from heat recovery.<\/p>\n

Alfa Laval Heat Exchangers: Converting Waste Solar Heat into Useful Stored Energy<\/h2>\n

The Alfa Laval heat exchangers will collect heat from the PV Ultra solar cells, and use it to heat water.<\/p>\n

The hot water is stored in one reservoir, while electricity from PV Ultra or the grid runs a chiller to produce near-freezing water in a second reservoir. This hot and cold water does not need to be used immediately, it can be stored and used to dispatch electricity overnight.<\/p>\n

Organic Rankine Cycle Turbines Explained<\/h2>\n

The hot and cold water drives an Organic Rankine Cycle (ORC) turbine. In an ORC turbine, organic fluids are used. These fluids have lower boiling points than water, so they can be turned into gas (vaporised) at much lower temperatures. This means that ORC turbines can be used where the heat source isn’t hot enough to produce steam.<\/p>\n

The hot water provides the energy needed to start the cycle, evaporating the fluid. This creates a high-pressure gas that drives a turbine. Once it has gone through the turbine, the gas – now at a lower pressure – enters a condenser where the cold water is used to cool it down and condense it back into a liquid.<\/p>\n

The company said the 4MW Carwarp plant is designed to deliver power to around 1,000 homes in its media release<\/a>.<\/p>\n

Energy Storage at Half the Price of Lithium Batteries: A Bold Claim from RayGen<\/h2>\n

RayGen also claims it can store energy at half the price of lithium batteries<\/a>. That’s a big call. Finn’s asked Ronald to objectively examine the economics of Raygen’s technology. Stay tuned for that post.<\/p>\n

It\u2019s been a slow road for RayGen: it first deployed a test facility in Newbridge in Victoria<\/a> in 2015.<\/p>\n

The company\u2019s web page shows Newbridge has had three 250kW PV Ultra systems<\/a> since 2018. The Carwarp facility is shown as half completed<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

RayGen is building a concentrator-style PV power plant in Victoria with thermal storage, and incredible claimed efficiency, and they’ve picked Alfa Laval to provide the heat exchangers.<\/p>\n","protected":false},"author":23,"featured_media":75655,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[678],"tags":[],"class_list":["post-75635","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-solar-battery-news","entry"],"acf":[],"yoast_head":"\nRayGen & Alfa Laval Push the Limits of Solar Efficiency In Victoria<\/title>\n<meta name=\"description\" content=\"RayGen's solar power plant in VIC targets 90% efficiency & energy storage at half the lithium battery cost. 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Developed at the company\u2019s State Key Laboratory\u2026","rel":"","context":"In "Solar Panels"","block_context":{"text":"Solar Panels","link":"https:\/\/www.solarquotes.com.au\/blog\/category\/solar-panels-2\/"},"img":{"alt_text":"solar panels on a roof and trina solar logo","src":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2015\/11\/trina.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":2130,"url":"https:\/\/www.solarquotes.com.au\/blog\/futures-so-bright-i-gotta-wear-shades\/","url_meta":{"origin":75635,"position":5},"title":"The solar thermal future\u2019s so bright I gotta wear shades","author":"Staff Writer","date":"December 23, 2012","format":false,"excerpt":"\u00a0 Last week we took a look at the rare event of Resources Minister Martin Ferguson putting his hand in his pocket to support a solar power initiative. 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