Adopting standards:

GB/T213-2008 "Method for determination of calorific value of coal", GB/T483-2007 "General determination of test methods for coal analysis", GB/T384-1981 "Method for determination of calorific value of petroleum products", GB/T30727-2014 "Method for determination of calorific value of solid biomass fuels" GB/T14402-2007Combustion performance of building materials and products - Determination of calorific value of combustion》JC/T1005-2006 "Method for determination of calorific value of cement black raw materials"ASTM D5865-13 "Standard Test Method for Gross Heating Value of Coal and Coke", ISO1928-2009 "Solid Mineral Fuel - Determination of Total Value and Calculation of Net Heating Value by Oxygen Bomb Calorimeter" CEN/TS 14918Method for determining the calorific value of solid biofuels》The BS SN 15400-2011Solid Recycling Fuel - Heat Generation Test》The IS：1350-1970Methods for determination of coal and coke》.

Scope of application:

It is mainly suitable for measuring the calorific value of solid or liquid combustible substances such as coal, petroleum, chemical, food, wood, etc. in industries or departments such as electricity, coal, papermaking, petrochemicals, cement, agriculture and animal husbandry, medicine, scientific research, and teaching.

Performance characteristics:

ZDHW-4C microcomputer fully automatic calorimeter (vertical twin tube) computer software applied to Windows system or above interface: adoptsNEWObject oriented software design technology.

■ AdoptingThe water quantification device, combined with the automatic water circulation system of the large water storage tank, can accurately and automatically quantify the water volume in the inner bucket without the need for manual weighing and adjusting the water temperature, avoiding errors caused by human factors in the testing results during the operation process, reducing the labor intensity of operators, shortening the testing time, and improving work efficiency.

Using scientifically effective algorithms, automatic cooling correction, and real and objective test results, without using software correction to change the test results.

It can run general software for other transaction processing, and at the same time, start the calorimeter measurement system to automatically calibrate the energy equivalent (heat capacity) and measure the heat generation of the calorimeter system. Input data such as sulfur, total water, analyzed water, hydrogen, etc., to convert and print out data such as cylinder heat generation, high-level heat generation, low-level heat generation, etc.

Technical indicators:

■ Heat capacity: approximately 10450J/K

Accuracy: The test results are within the allowable range of the standard sample

Heat capacity stability: Heat capacity change within three months ≤ 0.25%

Precision of heat capacity: ≤ 0.15%

■ Outer cylinder capacity: approximately 45L

■ Inner cylinder capacity: approximately 2.1L

■ Temperature range: 0-40 ℃ (temperature change should be ≤ 1 ℃ per measurement) Relative humidity ≤ 80%

Measurement error: ＜ 0.3%

Test time: ≤ 15min

■ Temperature resolution:> 0.0001℃

■ Power: 0.38kW

Power supply voltage: AC220V ± 15% 50Hz

Standard configuration: ZDHW-4C host 2TaiwanBrand computers, laser printers