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Suppliers Seek to Help Growers Save on Energy Costs

August's issue of Greenhouse Grower highlights how suppliers such as Svensson help to growers to save on energy costs. Greenhouse Grower, August 2017: New developments in heating/cooling technology and greenhouse screening can provide long-term efficiency in your greenhouse environment. 

Despite fuel costs trending down over the past couple of years, energy costs are still one of the largest expenses for most greenhouse growing operations.

As a result, growers are keener than ever before on finding energy solutions that can help them deal with these expenses, along with factors related to a changing climate. Here's what two leading industry suppliers are doing when it comes to new innovations in greenhouse energy systems. 

Focus on Long-Term Energy Savings, Not Immediate Equipment costs

According to Joel Rechin at BioTherm, the two most common concerns growers have when it comes to heating and cooling are cost and effectiveness.

"Finding a solution that is a balance of the two can be challenging," Rechin says. "To adequately answer this question, it is important to look at the system over five to 10 years to get a better idea of the true economic cost."

It also means taking other factors into consideration beyond the initial capital to retrofit or build a new system, such as the overall efficiency of the system or the monetary benefit of properly heating or cooling.

"Cost of ownership is much more important than initial cost," Rechin says. "A well-designed system addresses both cost and effectiveness, and ensures the grower is getting exactly what he or she needs, while properly maintaining overall plant health." 

For example, if a grower is cultivating on the floor, BioTherm will provide a tubing system that heats or cools from the ground up, keeping the plants' roots warm or cool. If a grower is cultivating on benches, BioTherm can provide an aluminum-finned pipe system that provides heating or cooling evenly across the entire bench surface.

Heating technology has come a long way in the past decade, and BioTherm is developing several new innovations. "What once took a large high-mass steam boiler to heat, we can now heat the same square footage using a much more efficient and small low-mass boiler system," Rechin says.

Taking Light Diffusion to the Next Level

Stella Thomas, Marketing Manager at Svensson, says energy savings are always top of mind, with growers especially interested in maximizing their energy savings potential.

"Climate curtains are among the most effective ways to save energy and strongly aid in reducing both heating costs at night and in the winter, helping control cooling costs by reducing temperatures and preventing plant stress due to solar radiation," Thomas says.

Svensson has several climate curtain solutions to help growers overcome heating and cooling concerns, Thomas says. The company is also constantly exploring new advancements that are at the forefront of innovation. Among these recent innovations are Svensson's New Harmony light-diffusing flame retardant range of climate screens.

The new generation of Harmony climate screens approaches light diffusion by improving the way sunlight is scattered through the screen's strip. Light is distributed more evenly to all plants and significantly diminishes structural shadows. These combined benefits result in faster growth, strong plants, and better growth consistencies.

In 2016, Svensson introduced an open, exterior Harmony screen, which gives growers the ability to lower greenhouse and crop temperatures while allowing more light in. And earlier this year, the company introduced Luxous 1147 FR, which provides 2% more light without losing out on energy savings and humidity transport properties. The transparency of Luxous 1147 FR makes it possible to keep the screen closed for more hours during the day, leading to further energy savings.

Magazine: Greenhouse Grower
Issue: August 2017
Author: Brian Sparks

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