HEATERS AND HEATING SYSTEMS TECHNOLOGY
For International clients 1 KCal = 3.968 BTU
has supplied a wide variety of Heating Systems, using most known fuels
and operating under light to arctic heating needs. We are introducint
to the animal, hog and poultry industry an outstanding efficient unit
called Cikki and Cikki70, both mobile and wall mounted. Chick here.
We select systems from each manufacturer that helps our client the most.
Naturally, each heating manufacturer feels their products are best and
they market what they produce.
As we are worldwide, we offer all types of heating systems for agriculture,
product storage, warehousing, etc. We offer and are agents for both domestic
and international manufacturers to include the outstanding Tecnoclima
Company and the famous Euroemme/Munters/Aerotech
heating systems. Domestically we offer the Lonnox/True Leaf, Modine, ADP
and the ERMAF heaters. We also offer the Siebring heater which is a reliable
floor mounted unit. The outstanding in-bench neating system comes from
Delta-T and we highly recommend Delta-T for those growers propagating
and growing crops on benches.
No singel heating company manufctures systems for every type of fuel,
heating requirements as tot eh amount of heat, nor do they offer distribution
of heat for all requirements. There are many reasons why we utilize different
heating companies for differnet applications. Some heating companies such
as Tecnoclima offer systems for all the voltages of the world. Other companies
may offer only 50 cycle or 60 cycle. there are also many different priced
units. Some systems are adapted for air delivery systems, others for boilers
and piping. Other systems, such as Delta-T are for on and under the bench
systems. The requirements worldwide are so diverse, we must offer many
companies heating system to meet our clients' crop and temperature needs.
Some of the companies we represent are Tecnoclima, Modine, Lennox/True
Leaf, Delta-T, Munters, Euroemme, ADP, ERMAF/True Leaf, Siebring.
Each client has special needs and requirements; there is no correct or
right way to implement a heating system - availability of fuel source,
heating requirements, delivery system, cost, crop grown, climate conditions,
etc. can all enter into your final decision and there are benefits and
disadvantages to every system.
We have descriptions of some of our most popular heating units on the
Heaters and Heating Systems page.
Please visit it.
We hope we have the opportunity to serve you.
TYPES OF HEATING SYSTEMS
Heating Systems are available in many different forms, all determined by
the source of the energy: Boiler, Steam, Hot Water, Electricity, Natural
Gas, Propane, Oil, Radiant, Geothermal, and Solar. We have supplied all
of the above. Waste Oil, Wood, and Coal are also used throughout the world.
The most popular and economical and the easiest to operation and install
are the air delivery systems utilizing Unit Heaters, generally suspended.
These units blow hot air throughout the greenhouse, or are connected to
are often asked about Electric Heaters. They are inexpensive to purchase,
but the cost of operation is prohibitive except in small research houses
or chambers. A large number are required for most installations as they
do not produce as many BTUs and their heat throw is limited. We discourage
electric heat in all commercial greenhouses.
Unit Heaters are cheaper to buy in small numbers than Boilers and when
used with Poly Ducts or Fan-Jets, heating is quite even throughout the
house. The limiting factor is about 450,000 BTUH per house for one duct.
If heat requirements are greater then space units or perimeter heat must
Boilers are the choice in many parts of the world. Furnaces are usually
fired either with Oil or Gas burners, Water/Steam is the transfer medium
using either pipe or Blower Units. Smaller, individual package boilers
are becoming very popular. Several
small Boilers are installed, and as additional heat is required, more
units are activated. With Boilers, zoning becomes a factor, such as staging
the boiler. An example is: first stage: boiler heat; second stage, perimeter
lines; third stage, overhead lines.
Finally, a word on propagation and on Bench Heating. These systems are
rapidly gaining acceptance for their energy savings and because they put
the heat where it does the most good: in the canopy of the bench-grown
plant. They are efficient and warrant consideration for bench or floor
grown, low height plant production. They have their limits in colder regions
and where total air heating is needed. Costs very dramatically, depending
on many factors.
SELECTING A HEATING SYSTEM
Some basic information is necessary to even begin to assist our clients:
- Size and type of building, Greenhouse, warehouse, industrial building,
poultry, hog, farm building.
- Type of covering
- Crop to be grown
- Lowest outside temperature in winter
- Average outside temperature in winter
- Existence of unusually high wind conditions (we generally use 15 mph
wind speed in our calculations)
- Bench or ground grown crop
- Voltage and electrical information
- Your choice of energy source
- Do you have a standby generator?
Heaters available from:
These initial questions will help us in providing you with some support.
Unfortunately, we cannot select for you. Many prospective clients ask
us to give cost and technical design or 3 or 4 systems. To do so is both
expensive and time consuming. Consulting and Technical Assistance is available
to help determine which fuel source you should use; the cost is nominal,
butmost clients determine their own fuel sources as soon as they decide
to build or expand., and we assist in selecting most economical, efficient,
and proper installation
The following indicates a 45 year history of our projects as pertains to
the most used energy sources.
- Natural Gas Air Delivery UnitsNote 1
- Propane Air Delivery UnitsNote 1
- Steam/Hot Water Units connected to client owned BoilerNote
- Package Boilers connected to greenhouse piping systems
- In/Under Bench Heating Systems using tubes and small boiler.
- Fuel Oil Fired Unit Heaters
- Purchased Boilers for clients and supply heat to the greenhouse
- Geothermal (only if water is in excess of 140oF
(60 C) at wall of greenhouse
- Electrical for small institutional greenhouses or chambers (only on
- HVAC Units for institution and industrial units when required (only
5 systems in 10 years)
IN FLOOR HEATING SYSTEMS ARE BECOMING MORE POPULAR EACH YEAR - CONSIST
OF HEAT PIPES PLACES IN CONCRETE FLOOR WHEN PLANTS GROWN LOW OR ON FLOOR.
NO PICTURES, BUT WE WORK WITH A FIRM WHO CAN HELP YOU DESIGN AND IMPLEMENT
Note 1Most often connected to Fan-Jet
system of Fan, Shutter, Tubing, and Head Distribution chamber.
We have descriptions of some of our most popular heating units on the
Heaters and Heating Systems page. Please
SPECIAL NOTE ON GAS OR OIL FIRED UNITS
When using Gas or Oil Fired Units in the building, proper venting is essential.
If you see signs of epinasty, bud damage, or other crop problems, or if
you smell exhaust fumes, then these are indicators of improper venting.
Good and complete venting of the units is most important.
ABOUT THERMOSTATS AND THERMOMETERS
Another word of caution: we have seen hundreds of times where growers spend
great sums of money on efficient heating systems and then install $2.00
USD thermometers and cheap thermostats that are not accurate. You may think
you are growing at 65oF (17C) when the actual
temperature is higher or lower by 2-3o- not much
difference for one day, but a tremendous amount over a 3-4 month winter.
Also, be sure to install the thermostats and thermometers so they can
raised or lowered. So often we see them hung at eye level when the crop
is grown on the ground. Put them where they are needed - at crop level.
Maintenance is a very important part of your heating system. For our
clients we provide materials to assist you. On request with purchase we
will supply our tips on maintenance, operations, and heat savings techniques.
INTERNATIONAL RATING ADJUSTMENTS
Most of our literature is published based on 60 cycle power. Many international
markets use 50 cycle power, and therefore unit power capabilities must be
adjusted by the following rules of thumb. Check with local electricians
for all conversions.
- Gas Fired Heaters / Oil Fired Heaters:
- Multiply catalog / web site BTU input and output by 0.833
- Multiply catalog CFM by 0.833
- Hydronic Unit Heaters - Steam/Hot Water
- Multiply catalog BTU output by 0.896
- Multiply catalog CFM values by 0.833
- Also CMH (Cubic Meters per Hour) equals 0.588 CFM (Cubic Feet per
Our international clients using single and three phase 50 cycle instead
of 60 cycle would find that the following are available from stock. All
types of heaters, Tecnoclima, Euroemme, Ermaf.