HEAT RECUPERATION SYSTEMS Heat Recuperators Economizers Air Coolers

www.ghtransfer.com Located At: 15700 International Plaza Dr. Suite. 100 Houston, Texas 77032

Contact Us: TEL 281-546-3550 FAX 281-553-3222 [email protected] [email protected] HEAT RECUPERATION SYSTEMS Heat Recuperators Economizers Air Coolers

TABLE OF CONTENTS

SECTION 1 Divisions SECTION 2 Technical Capabilities SECTION 3 Certificates SECTION 4 Heat Recuperation SECTION 5 Heat Recuperators SECTION 6 Economizers SECTION 7 Air Coolers SECTION 8 Contact Us SECTION 1 Divisions

Since Global Heat Transfer’s foundation, we have worked in satisfying the needs of the steel chemical & petrochemical industries. These years of experience rendered a specialized group of people in process equipment manufacturing.

Today we are proud to introduce the new manufacturing division in the Global Heat Transfer family:

Heat Recuperation: with this division, we will be servicing the industry with:

• Heat Recuperators • Economizers • Air Coolers’

DIVISION ESTABLISHED

Product Catalog 1998

Heat Exchangers & Pressure Vessels 2006

Heat Recuperation 2008

Engineering

The experience and capability of our personnel allow us to offer tailor made solutions. We fabricate based on our own or costumer provided designs.

SOFTWARE: HTR1 - Xist HTR1 - Xace Aspen - Shell & Tube Mechanical PV - CodeCalc PV - Elite Autodesk - AutoCAD

Manufacturing

We manufacture using the right tools and equipment for every job.

Quality Control

Every step of the manufacturing process is supervised byour highly experienced Quality Control Team.

Global Heat Transfer provides all products that are ASME, National Board, TEMA, HEI, ANSI, ASTM and API certified according to the codes and standards.

Once most of fueled-heated equipments (either furnaces or boilers) reach their practical temperature limit, they waste a great amount of heat energy through their stacks.

The Heat Recuperation Process is the recovery of wasted heat in a process that works above ambient temperature, allowing us to apply it in other process or improve the efficiency of the original one; Melter can help you to achieve this.

Heat recovery equipment in industrial furnaces and boilers is a practical alternative for fuel savings & cost reductions.

TYPICAL HEAT USE

Heat to Load 10% - 53%

TYPICAL HEAT LOSS

Flue Gas 40% - 70%

Wall 2% - 6%

Radiation 3% - 6%

Conveyor 2% - 7%

Stored Heat 0% - 02%

Flue Gas Loss

Wall Loss Total Input Radiation Loss

Heat to Load

Conveyor Loss

(Heat waste depends on design of each equipment.)

Heat Recuperators

A recuperator is a special heat exchanger used to recover waste heat from exhaust gases. In many types of processes, combustion is used to generate heat, and the recuperator serves to reclaim this heat back, in order to reuse or recycle it.

Convection Channel H.R.

The Convection Channel H.R. is installed in the furnace flue channel, and consists of a bundle of steel pipes through which the air that will be preheated will pass by.

Convection Flue H.R.

The Convection Flue H.R. receives the combustion gas through the tube bundle. On the other hand, the air to preheat runs inside the shell and flows around the bundle recuperating the thermal energy. It is a very similar process to that of a Shell & Tube Heat Exchanger.

Radiation Double Shell

Radiation Cage H.R.

The Convection Channel H.R. is installed in the furnace flue channel, and consists of a bundle of steel pipes through which the air that will be preheated will pass by.

Radiation Cage H.R. is widely used in:

• Forging Furnaces • Glass Industry • Ceramic Industry

Percentage of Fuel Savings Gained by Using Preheated Combustion Air

Furnace Exhaust Temp. Preheated Air Temperature °C / °F

°C °F 316/600 427/800 538/1000 649/1200 760/1400 871/1600 538 1000 13 18 649 1200 14 19 23 760 1400 15 20 24 28 871 1600 17 22 26 30 34 982 1800 18 24 28 33 37 40 1093 2000 20 26 31 35 39 43 1204 2200 23 29 34 39 43 47 1316 2400 26 32 38 43 47 51

The H.R. used in boilers to recover heat from flue gases and use it to increase boiler feedwater temperatures prior entering the boiler itself are called Economizers. They can be either cylindrical, rectangular or of any other configuration as required by the customer.

Economizers are a perfect fit for the following conditions:

• Stack temperature above 175cF (BOcC) • Boilers with nominal capacity above 50 BHP • Hot gas flow through stack

Economizers can be installed in:

• Horizontal or vertical gas flows • Before or after air heaters • Stacks • Piping • Boilers

Special Fabrication:

Melter economizers are designed and fabricated under specific characteristics and parameters in order to satisfy the particular application for which they were required. Equipments are manufactured and tested according to the ASME codes. They can be stamped if required by the customer.

Economizer wide range of industrial applications:

• Energy and Power • Chemical • Petrochemical • Steel • Food • Pulp and Paper • Incineration

Cylindrical Economizer Rectangular Economizer Custom-Made Economizer

An Air Cooler is a Heat Exchanger that uses air at ambient temperature as cooling media. It cools a fluid by making it circulate inside a tUbe bundle while the outer side of the bundle is in contact with the cooling media.

Air Coolers are quite convenient in regions with scarcity of cooling water and where water treatment costs are elevated.

Induced Draft

Forced Draft

1. Tube Bundle 2. Header 3. Nozzle 4. Supporting Column 5. Plenum 6. Fan 7. Fan Ring 8. Mechanical Drive

Fin Tube

Beside the headers, tube fins are another feature for the proper “L” Extruded Embedded performance of the Air Cooler. Temp °C / °F 300 / 150 540 / 280 750 / 400 different operating conditions, the Mechanical Endurance Regular Very Good Good Under most common types of Corrosion Endurance Good Very Good Good tube fins are: Cleaning Endurance Regular Low-High High

Headers

Cover Plate Plug Box Pipe Header

Depending of its application or customer specs, the headers can be:

• Cover Plate Type Application Pressure Cleaning • Plug Box Type Cover Plate Common Until 300 psi Very Easy • Pipe Header Plug Box High Until 3950 psi Easy

• Pipe Header Type Header Common Low-High Not Easy

“L” Footed Fin Embedded Fin Extruded Fin

Located At: 15700 International Plaza Dr. Suite. 100 Houston, Texas 77032

Visit our website at: www.ghtransfer.com