July 31, 2017
Suppliers Seek to Help Greenhouse Growers Save on Energy Costs
New developments in heating/cooling technology and greenhouse screening can provide long-term efficiency in your greenhouse environment.
September 29, 2017
Vertical Farming Looks to Go Mainstream
The University of the District of Columbia is the nation’s only urban land-grant university, so it was a particularly appropriate setting for the Association of Vertical Farming (AVF) to host the AVF Summit 2017 on September 22. The summit was a mix of education, advocacy, and policy discussion about urban agriculture — vertical farming in particular — targeted at finding ways to broaden its adoption in cities around the country and around the world. You’ve probably heard quite a bit in recent months about vertical farming — systems for growing food in stacked layers in completely controlled environments, applying inputs such as light, water, and fertilizer in precise amounts. While there’s some use of these systems in greenhouse settings, in many cases, urban farmers are repurposing abandoned buildings or even shipping containers. Match the availability of these facilities in most large urban areas with big cities’ limited access to fresh, […]
March 14, 2017
Researchers Examine Efficacy of Direct-Fired Greenhouse Heaters
A team of researchers at The Ohio State University is examining the efficiency of direct-fired heating systems in comparison to ventilation costs.
February 15, 2017
New Greenhouse Cooling System in Development for Hot-Climate Regions
Researchers at McGill University in Quebec have developed an alternative evaporative cooling solution for greenhouses in warm climates, and are now seeking commercial partners.
November 28, 2016
The Latest In Greenhouse Heating And Cooling Products
New developments in heating, cooling, ventilation, and humidity control technology are designed to help you manage your greenhouse environment more efficiently. Check out some of the latest offerings from leading manufacturers.
August 4, 2016
How Suppliers Are Helping Greenhouse Growers Deal With Heating Issues
Many growers say they are looking for more direct heating to the plant, along with better boiler and system efficiencies. Here's what two companies are doing in response.
April 9, 2016
How To Fine-Tune Your Greenhouse Cooling And Ventilation Systems
Like most equipment, greenhouse components and machinery must be serviced regularly to keep them in good working order.
February 18, 2016
Metrolina Greenhouses Has Improved Heating Efficiency With Green Solutions
Sustainability started to become a keyword in the horticulture industry in the late 2000s, when growers began converting their heating systems to greener options to save on energy costs and reduce their impact on the environment. However, there haven’t been many operations that have invested in sustainable solutions on as large of a scale as Metrolina Greenhouses at its Huntersville, NC, headquarters. Six years later, the operation is still fully committed to its biomass heating system and everything it entails. Metrolina first fired up its Vynke biomass system from Belgium in 2010. The four wood boilers cover 95% of the operation’s heating needs at its 201-acre main location in Huntersville, NC, and Metrolina still maintains its traditional heating systems for back up and to provide flexibility of resources. Wood chips are sourced locally, with the majority from local forestry activities like wood harvesting companies and developers. The other […]
December 21, 2015
Three Strategies For Overcoming Greenhouse Heating Concerns
Lost heat, maintaining an ideal greenhouse temperature, and inefficiency in heating systems are three of the most common problems growers face when it comes to heating. Here’s a look at some ways to overcome these challenges.
August 1, 2015
5 New Heating Options For The Greenhouse
Five heating systems manufacturers share their latest and greatest products. Tubing And Aluminum Heat Pipes (BioTherm) From Megatube and MicroClimate tubing to DuoFin and StarFin aluminum heat pipe, BioTherm is dedicated to providing heat solutions that can withstand the toughest greenhouse environments. The MegaTube and MicroClimate tubing options are easy to install and ideal for bench or floor heating. The tubing has a conductive heating surface that allows for maximum root-zone heating. The DuoFin and StarFin aluminum pipe options are great for perimeter heating and melting snow trapped in the greenhouse gutter. It can also be useful for bench heating. Both pipe options provide gentle, radiant heat for plants and don’t require welding. TrueLeaf.net Infinite Energy 2 Condensing Boiler (Delta T Solutions) With up to 98 percent efficiency, the IE2 condensing boiler boasts a stainless steel heat exchanger with larger waterways to ensure maximum heat transfer. The product’s design ensures flexibility while […]
July 27, 2015
In Hot Pursuit Of Heating Trends For The Greenhouse
From biomass boilers to hydronic-heating systems, growers have a range of options to fit their operation’s unique needs. Here’s what five manufacturers had to say about the latest trends.
June 23, 2015
Schaefer Ventilation Opens Distribution Center In Atlanta, Adds New Staff Member
Schaefer Ventilation Equipment, a manufacturer of ventilation and thermal comfort products, has opened a new distribution center in Atlanta, Ga., to increase efficiency and provide faster services to dealers. Additionally, the company has added a new staff member to its agricultural and horticultural division to help expand markets in Latin America.
February 24, 2015
Ethylene From Defective Greenhouse Heaters Damages Crops
Malfunctioning greenhouse heaters can lead to crop damage from ethylene and carbon monoxide induced illness for workers. Michigan State University's Extension educators Tom Dudek and Randy Beaudry teach you how to recognize the symptoms and check greenhouse heaters to avoid the concern.
June 27, 2014
4 New Products For Cooling, Shading And Ventilation
The Vertex by Poly-Tex The Vertex is the newest member of the Greenhouse Megastore’s shade structure family. Make a statement and show your colors with this simple, stylish shade house.The easy-snap button frame and bungee-shade attachments will provide shade in no time. With more than 7 feet of sidewall clearance and 13 feet to the peak, the Vertex will give shade while keeping that open-air feeling.
June 5, 2013
Natural Ventilation And Fog Increase Cooling Efficiency
For greenhouse ventilation, two main methods are used — mechanical and natural. Mechanical ventilation includes fan-and-pad systems, which are a type of evaporative cooling system. Fan-and-pad systems cool air by passing outside air through a wet pad, lowering the temperature and humidifying the greenhouse. This type of system works best in hotter, drier climates, because the capacity for cooling with a fan-and-pad system is very limited in humid climates. University of Arizona associate professor Murat Kacira says a drawback of using a fan-and-pad type system is that it requires a lot of energy and water. “Water is needed for the pad system, and energy is needed to run the pump for water circulation over the pad as well as the energy to run the exhaust fans,” Kacira says. “Water is a precious resource with limited availability, especially in arid and semi-arid regions. “Another issue is there can be a temperature […]