Calculating Heat Kilowatts and Specific Heat Values

Anderson-Bolds has been providing heating solutions to industry since 1934.

Here is the quick and simple heating equation and variables needed to heat an application.

Required BTU's or KW are calculated with this equation.

WxSHxΔT =BTU/hour

Weight (lb) of material being heated = W
Specific Heat of material = SH
Change in Temperature needed or Delta T = ΔT

To Convert BTUs to KW, divide the BTUs by 3413.

This equation only yields the heat input and does not take into consideration any heat losses or heat gains within a process. If an application is heating water but then a solid piece of metal enters into the water, the solid mud be heated too as well as the tank to achieve the goal system KW required.

Below are specific Heat values for common substances along with weights.
Specific Heats listed are all below 1 except Water which is 1.

Solid weights are per cubic foot and liquid weights are per gallon in pounds.

Aluminum   .23 SH  and  160 pounds
Asphalt       .40  and  65 pounds
Brass    .10  and 525 pounds
Bricks/masonry  .22 and 140 pounds
Carbon  .204  and  ??
Copper  .10  and  550 pounds
Glass   .20  and   165 pounds
Graphite   .20  and  130 pounds
Iron  .13  and  450 pounds
Lead  .031   and   710 pounds
Nickel  .11  and  550 pounds
Paper   .45  and   58 pounds
Paraffin  .70  and 56 pounds
Rubber  .40  and  95 pounds
Silver  .057  and  655 pounds
Solder   .04  and  580 pounds
Steel   .12  and  490 pounds
Sugar  .30  and 105  pounds
Sulphur   .203  and  125 pounds
Tin  .56  and 455 pounds
Wood (oak)  .45  and 50 pounds
Wood (pine)  .45  and 34 pounds

Liquids
Acetic Acid  .472  and 8.81 pounds
Alcohol  .65  and 7.35 pounds
Benzine  .45  and 7.49 pounds
Ether  .503  and  6.15 pounds
Glycerine   .58  and 10.58 pounds
Mercury  .0333  and  113  pounds
Oil   .47   and  7.76  pounds
Petroleum   .51  and 7.49 pounds
Turpentine   .41  and   7.22 pounds
Water   1.0  and  8.34  pounds  (Most Difficult to Heat)

Please contact Anderson-Bolds HERE to discuss your heating process or application.

Anderson-Bolds
Since 1934
216-360-9800
www.anderson-bolds.com

Q'Mark Zero Clearance Unit Heater - CHPR25

Compact Freeze Protection Unit Heater by Q'Mark and Anderson-Bolds

Use the Anderson-Bolds' HVAC Application Form for Help with your application!

Model CHPR25 is a unique application heater approved for installation in a concealed space, an area between a finished ceiling and drop ceiling, a plenum space, or inside a plenum. It may be installed in areas that are not readily accessible and may be installed for freeze protection.

The Features of the Q'Mark CHPR25 are:

18 ga. all steel casing with neutral grey polyester powder coat finish for corrosion protection

Easy to install using the hanging bracket supplied

Steel finned low watt density element. Fins and elements are arranged in a uniform grid

pattern to assure that all incoming air passes through the heating element.

High limit thermal cutout automatically shuts off current in the event of

overheating and reactivates the heater when temperature returns to normal.

Fan delay control

Optional alarm (240V) to alert automatic thermal limit tripped. Model AFL240

ETL Listed - Control number 9900268

Built-in, heavy duty, contactor/relay

Control Box gasketed to keep out moisture and dust. NEMA 12 construction

Fan motor is totally enclosed, permanently lubricated and thermally protected

Great air throw

Single Point field wiring connection

The Q'Mark CHPR25 is COMPACT 

• Axial fan design allows for smaller unit size

• Dimensions: 12”H X 14”W X 14”L 

• Weight: 26 lbs.

• Standard hanging bracket supplied

• Can also be installed with threaded rod

The Q'Mark CHPR25 has AGENCY APPROVALS 

Model CHPR25 is design certified by ETL to comply with Standard for

Heating and Cooling Equipment ANSI/UL 1995 and CAN/CSA No. 236-05,

third edition. Meets stringent City of Chicago codes for plenum use.

The Q'Mark CHPR25 is ZERO CLEARANCE CAPABLE 

Model CHPR25 is rated for zero clearance to any surface mounted next to the sides, top, and bottom of

the metal cabinet. The rear (entry air) and front (exit air) must have the proper clearances stated in the

installation manual.

Minimum Installation Clearances

SIDES, TOP AND BOTTOM 0 IN.

REAR: 7-3/8 in. (187 mm)

FRONT: 24 in. (610 mm)

The Q'Mark CHPR25 is EFFECTIVE 

• Output: 2500 Watts

• Voltage: 240 1 Phase

• BTUH: 8530 Amps:10.7

• Temp Range: 40°F to 90°F with Positive OFF

The Q'Mark CHPR25 is VERSATILE 

This unit is designed for light commercial and residential use and costs less to operate than larger plenum heaters. It may be installed inside a plenum, plenum space, concealed space between a finished ceiling and drop ceiling or in any open space above a ceiling or below a floor that is used as an air plenum. Perfect for parking garage ceilings, industrial space heating, or crawl spaces.

The Q'Mark chpr25 is rated:

208     /   240 volts

1.9     /   2.5 KW

Single Phase

63987  /   8530  BTUH

130    /  150 CFM

46     /  60 degree rise in temperature

9.42 / 10.7 amps

Q'Mrkk Model CFP25 is designed, tested and Listed by Intertek Testing Services NA, Inc. (ETL/C-ETL Listing Mark) to comply with the following standards:

USA: ANSI/UL 1995 titled “Heating and Cooling Equipment”

Canada: CSA C22.2 No. 236-05, third edition titled “Heating and Cooling Equipment”

This unit is specifically designed and approved for freeze protection installations into a concealed space and other areas not readily accessible. Typical applications include plenums and associated plenum spaces (such as areas above a finished ceiling that contain utilities), crawl spaces, water closets and other concealed locations where freeze protection is required.

Note: rated static pressure is 0.20” sp . This unique heater is provided with a set of normally open contacts that can supply a line voltage signal to an alarm device if desired to provide early notice if for any reason the heater cycles off on its built-in over temperature safety control. This can provide an early notification to allow for repairs BEFORE a freeze up occurs

REPAIR PARTS

1.   Fan Blade           1210-2017-000    Need 1

2.   Time Delay          410171003          Need 1

3.   High Limit            1414-2037-000    Need 1

4.   Motor                  3900-11007-001  Need 1

6    watt unit bearing

5.   Relay                 1414-2038-000     Need 1

6.   Terminal Block   5823-0004-000     Need 1

7.   Thermostat        5813-2091-000    Need 1

8.   Thermostat Knob   3301-2053-000  Need 1

9.   Wire Guard            312056-000     Need 2

10. Element                 302006807

Use the Anderson-Bolds HVAC Application Form for Help with your application!

or call Anderson-Bolds at 216-360-9800.

We handle the Ohio and Kentucky areas for Q'Mark.

email is qmark@anderson-bolds.com

Q'Mark and Marley Engineered Products LIMITED WARRANTY

All products manufactured by Marley Engineered Products are warranted against defects in workmanship and materials for one year from date of installation, except heating elements which are warranted against defects in workmanship and materials for five years from date of installation. This warranty does not apply to damage from accident, misuse, or alteration; nor where the connected voltage is more than 5% above the nameplate voltage; nor to equipment improperly installed or wired or maintained in violation of the product’s installation instructions. All claims for warranty work must be accompanied by proof of the date of installation. The customer shall be responsible for all costs incurred in the removal or reinstallation of products, including labor costs, and shipping costs incurred to return products to Marley Engineered Products Service Center. Within the limitations of this warranty, inoperative units should be returned to the nearest Marley authorized service center or the Marley Engineered Products Service Center, and we will repair or replace, at our option, at no charge to you with return freight paid by Marley. It is agreed that such repair or replacement is the exclusive remedy available from Marley Engineered Products. THE ABOVE WARRANTIES ARE IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED. AND ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE WHICH EXCEED THE AFORESAID EXPRESSED WARRANTIES ARE HEREBY DISCLAIMED AND EXCLUDED FROM THIS AGREEMENT. MARLEY ENGINEERED PRODUCTS SHALL NOT BE LIABLE FOR CONSEQUENTIAL DAMAGES ARISING WITH RESPECT TO THE PRODUCT, WHETHER BASED UPON NEGLIGENCE, TORT, STRICT LIABILITY, OR CONTRACT. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above exclusion or limitation may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. For the address of your nearest authorized service center, contact Marley Engineered Products in Bennettsville, SC, USA, at 1-800-642-4328. Merchandise returned to the factory must be accompanied by a return authorization and service identification tag, both available from Marley Engineered Products. When requesting return authorization, include all catalog numbers shown on the products.

216-360-9800

www.anderson-bolds.com

Copper Sheath Immersion Heaters

Screw Plug Immersion Heaters with Copper Sheath for Heating Water.

Anderson-Bolds has been providing electric heating elements for heating water since 1934.  The first choice in heaters for industrial accounts to heat water tanks are screw plug electric immersion heaters.  The Screw Plug is easily installed via an NPT fitting in the tank wall.  The heater should be located near the bottom of the tank as when the heater is on it creates a convection within the tank.  The heater heats by conduction, or contact with the media.  But as water is heated or warmed by the immersed elements the warm water rises to the top of the tank.  The water below the heating element in a tank will not be heated.  Copper is the preferred sheath material for heating water.  Copper has the best heat transfer capability but also the lowest max temperature of about 750 degrees F.  Level control and temperature control can be critical to keeping the elements from burning out.  If the tank drains to expose the heaters and they are energized, they will fail quickly.  Air is a poor heat conductor and thus the elements will quickly heat up to over 350 degrees.  An element on an electric range is made of Incoloy, when the element turns red, the temperature is about 1250 degrees F.

Screw plug immersion heaters consist of tubular elements in a threaded hex plug. Some models are provided with a thermowell for the temperature control sensor and a variety of electrical enclosures for electrical connections. They screw directly through threaded openings in tank walls to heat liquids, viscous fluids, forced air, and gases by direct contact.

Chromalox MT and ARMT series Screw Plug Immersion heaters ( 2-1/2 inch plugs) with copper sheath are available in the below types or styles.

Screw Plug Immersion Heaters can have NEMA 1 housing or general purpose housing for in plant use.
Screw Plug Immersion Heaters can have Moisture resistant housing for wet locations, indoors or outdoors.
Screw Plug Immersion Heaters can have Explosion Resistant housing for hazardous rated areas.

Screw Plug Immersion heaters can also have Thermostats built into the enclosure.  the Thermostats can handle up to 22 AMPS.  If three phase or above 22 amps, a three pole contactor will be required to switch on the heating elements.

Screw Plug heaters with integral thermostat, 0-100 degrees F adjustability.
Screw Plug heaters with integral thermostat, 60-250 degrees F adjustability.

For level control, please go to our level control page here.

For contactors, please go to our contactor page here.

Please visit our immersion heater application data form here and Anderson-Bolds can help pick an immersion heating system for you.

email us at info@anderson-bolds.com

or call us at 216-360-9800