Electric Heat Tracing Element for Freeze Prevention of Pipework is a technical solution to the freeze prevention of pipework based on various options. In cold winter or areas, water or chemical pipework often needs to be heat traced to prevent freezing. Thermal insulation alone is incapable of preventing freezing. A 25mm bore pipe at 5°C having 25mm thick insulation will reach freezing point within one hour in an ambient temperature of -10°C.

Steam at, say 150°C, is not a viable fuel source for simple freeze protection and of course, condensate returns may themselves freeze. Electric heat tracing having a low power output is the most convenient and efficient option.

Take MI cable solution for example, Heat Trace Mineral Insulated Heating Cable can meet the needs of high temperature condition and heat tracing of long-distance transportation pipeline or other various process pipelines. The maximum withstand temperature of the copper sheathed heating cable (MICU) provided by MICH can reach up to 250℃. Conductor resistance value ranges from 1.7-2000Ω/km. For the occasion of anti-corrosion or buried application, high density polyethylene (HDPE) outer sheath ( cable known as MIHC) is needed to be added. MIHC’s withstanding maximum temperature can be up to 90℃. Mineral insulated heating cable possesses excellent mechanical strength. The heating cable of series resistance provided by MICH can meet the requirements of different power levels.

High-temperature heat pipes are typically defined as heat pipes that operate between 400 and 1100°C. However, the fluid properties vary too much across this wide temperature range for any one of those fluids. Three fluids are typically used to cover this range; Cesium, Potassium, and Sodium. The operating range for each fluid is shown below:

Cesium 300 to 600°C (572 to 1,112°F)

Potassium 400 to 1000°C (752 to 1,832°F)

Sodium 500 to 1100°C (932 to 2,012°F)

Typical applications for high-temperature heat pipes include the following:

1. Heat Engine Receivers (Steam, Stirling, Brayton, Rankine)

2. Solar Thermal

3. Heat exchangers

4. Hypersonic wing leading edges

5. Waste heat recovery

6. Nuclear power

7. Thermoelectric Generators

8. Isothermalizing furnace elements

Cable Structure

Specification

Heating cable instruction code

MI CU-B 16K320/60/2520/220/E1

No. 1 2 3 4 5 6 7

Cable Code

1 6 K 320

No. 1 2 3 4

Table 1 Structure of Cable Element

Note: Model C, F and G are suitable for being used at temperature under 65℃

Table 2 Heating Cable Specification (600V Single Conductor)

Table 3 Heating Cable Specification (600V Double Conductors)

Table 4 Heating Cable Specification (300V Double Cores)

Note: the resistance value of 2-core cable in the above table is the measured value after the ends are twisted (i.e., single-core resistance X2);

For the use of 660V voltage occasions, please contact our company professionals;

Mark of (300)☆ is a recommended production length by MICH

Table 5 terminal specifications

Note 1: E1 means 1/2 "NPT;E2 means 3/4 "NPT;E3 represents 1 "NPT (taper thread);Additional connection thread requirements are available.

Note 2: the length of cold end cable with standard configuration is 2 meters. If you increase or decrease of length required, please contact our professional personnel.

Corresponding reference table between the output power and sheath temperature

Note: when applying a copper conductor heating cable, please pay attention to the conversion of its heated hot resistance and unheated cold resistance.

Anticorrosive specification

Explosion-proof instructions

MIAL series heating cable with explosion-proof terminal, can be used in potential explosive environment. Authenticated by the Chinese CQST, in accordance with Chinese GB3836 explosion-proof electrical standards, they can be applicable to Ⅱ A, Ⅱ B, Ⅱ C (C1D2) level of explosion-proof electrical equipment.

Pasia Industries is a scientific and technological enterprise specializing in researching, developing, producing, installing and providing technical consultation and service for mineral insulated heating cables, heating elements and finished heaters as well as welded honeycomb products for filtering, shielding, sealing and guiding. Located in Puyuan high-tech park, Zhejiang province, it covers an area of more than 10 hectares, with a construction area of more than 50,000 square meters. It possesses a convenient transportation, about 150 kilometers from Shanghai in the north and 40 minutes from Hangzhou Xiaoshan international airport in the south.

With the most professional production lines and the highest automation level in China, Pasia produces mineral insulated heating cables, heating elements and finished heaters, honeycomb cores of stainless steel, brass, nickel, aluminium and other metal or metal alloys according to international standards. Pasia is one of the top four professional manufacturers of industry in the world on capacity and sales. As leading technological products, they possesses advanced properties of good quality, many varieties, full specification range, wide application, long service life, good safety and easy maintenance etc., and have been successfully applied to oil and gas (extraction, transportation, storage, etc.), chemical industry （petrochemical industry, fine chemical, pharmaceutical, etc.), power (nuclear power, solar power, etc.), construction (melting ice and snow), railway, aviation, metallurgy, electronic and et al for the applications as heat tracing and heating, detecting, signaling, power transmission, as well filtering, shielding, guiding and sealing. The company has become one manufacturer of the few in the world of completely electric heating technology and products of four categories including constant wattage, temperature self-regulating, MI heating cable and skin effect resistance and one of the top three wire electric heating products suppliers. The honeycomb core has been widely used by many clients on filtering, water treatment, structure platform with high requirement on flatness, shielding, turbine sealing and straightening etc. It can not only provide complete categories of professional products, also provides customers with solutions, consulting, project reply, EPC project general contracting services which can even be extended to the services including safe operation for maintenance etc. So far, the company has possessed 25 related patented technologies, 13 national new products, and 12 national technological innovation projects.

Upholding a company spirit of leading innovation and win-win cooperation, Pasia has become one of the few in the industry who possesses complete capacity of research and development, design, production and installation of mineral insulated heating cable and its heating equipment, honeycomb core and its parts or modules both home and abroad, relying on professional team, advanced management means, close work with related universities, design institutes and scientific research units, industry leading R&D testing capacity, under the ISO9001 quality system. After several years’ hard and persistent efforts, Pasia have the ability to supply a complete set of products, excellent technical support and perfect follow-up service. A variety of products have not only been applied to meet the requirements from domestic market, but also exported to many countries and regions such as Europe, Asia, Africa and America to serve different categories of purposes. It receives a high visibility and reputation from the industry. Over the past years, the company has involved in thousands of projects from all walks of life, among which the most influential ones are:the explosion-proof natural gas electric heater at Datong natural gas gate station in Shanxi province; Electric heater for paint material for the production bases of Hempel (USA) paint company in Kunshan and Guangzhou; Electric heaters for Tongyi chemical system in Beijing, Lanzhou, Shanghai and Shandong; Complete heating and tracing equipment for large oil and gas fields in Jiangsu oilfield, Benin, Angola, Thailand, Myanmar, Kazakhstan, the UK, Canada; the wind or water tunnels of honeycomb core in Singapore, India, USA and UK, shielding honeycomb core applications from many foreign countries, honeycomb seals for the turbines from Russia etc.

Insists on serving market with sincerity, securing quality with technology, leading innovation with study and driving development with passion, Pasia has become a well-known provider of advanced heating technology solutions at home and abroad, and one of the fastest growing members in the industry.