--- title: "Electric Hot-Water Heating Package" url: "https://xgthermal.com/products/skid-mounted-electric-circulation-heating-system/" language: "en" --- # Electric Hot-Water Heating Package An integrated electric heat source for oilfield tank coils, radiator circuits and circulating-water heating. Equipment Overview ## More than a heater. A coordinated heat-supply package. This skid-mounted electric circulation heating system combines an electric heater, circulating pump, make-up water tank and control cabinet on a common base. Heated water leaves the skid, delivers heat through tank coils or radiators, and returns for reheating. In tank-coil service, water circulates through the equipment while oil remains inside the tank. We configure heating power, pump flow, piping and controls around your external circuit, installation space and available electrical supply. [Discuss Your Requirements](https://xgthermal.com/contact.html) ![Electric hot-water heating skid with heater, circulating pump and integrated equipment](https://xgthermal.com/images/products/product-details/product6-detail-1.webp) Package shown. Final equipment and interfaces follow the project specification. ### Circulating heat supply Supply and return water serves an external heating circuit. ### Heater, pump & tank Heating and circulation equipment assembled on one base. ### Coordinated controls Temperature, pump operation, flow and water level reviewed together. Applications & Operating Conditions ## Bring heat to the load. Return water to the skid. The connected tank coils, radiators and heating branches determine the required heat duty, supply temperature, circulation flow and pump head. ### Oil storage tank coils Hot water transfers heat through coils to help maintain stored-oil temperature. ### Well-site tank heating A packaged heat source for single-well tanks with compatible water circuits. ### Sites with limited fuel gas An electric alternative where fuel availability is limited and site power is suitable. ### Radiators & circuit upgrades Heated water for compatible facility radiators or existing heating-circuit retrofits. Engineering & Integration ## Match the heat source to the whole circuit. A heater alone does not establish a working heat-supply system. The pump must circulate sufficient water, the external coils or radiators must transfer the required heat, and the controls must coordinate temperature, flow and water level. After releasing heat, return water is reheated on the skid. The make-up tank supports replenishment; expansion, venting and pressure protection are selected for the final circuit arrangement. Equipment selection also considers water quality, scaling, insulation and winter freeze protection. - Pump flow and head based on the heater, piping, valves and coil resistance. - Tank inventory, warm-up time and operating heat demand reviewed separately. - Supply / return flanges, electrical feed and site signals defined before manufacture. - Heater, pump, piping, valves, instruments and controls coordinated within the agreed scope. 01 ### Supply-temperature control Supply-water temperature feedback regulates heat input against the circuit setpoint. 02 ### Pump & heater sequencing Circulation is established before heating; stop and cooldown sequences follow the agreed design. 03 ### Low-flow & low-level protection Insufficient circulation or water level inhibits heating and initiates an alarm or shutdown. 04 ### Independent protection High-limit temperature, pump overload and electrical-fault trips complement normal control. Technical Data & Delivery Scope ## Review the details that matter. Published options provide a starting point. Final values and certification requirements are confirmed for your project. [Request a Datasheet](https://xgthermal.com/contact.html) ### Specifications | Specification Parameters | Specification Details | | --- | --- | | Rated Voltage | AC 380 V, 50 Hz (customizable) | | Rated Power | Up to 500 kW | | Inlet/Outlet Specification | Custom supply / return connections | | Control Mode | PLC / microcontroller / digital controller (optional) | | Alarm Mode | Over-temperature, over-pressure, low flow, low water level and electrical faults | | Design Pressure | Project-specific system rating | | Control Cabinet | Explosion-proof / non-explosion-proof | | Protection Class | IP65 | | Explosion-Proof Grade | Exdb IIB T1~T6Gb Exdb IIC T1~T6Gb | ### Standards & Certification | Standards and Certification Area | Reference / Route | How XGTHERMAL Supports It | | --- | --- | --- | | Explosion-proof design basis | IEC 60079 / GB/T 3836 | Design reference for applicable heater, motor, terminal enclosure and hazardous-area electrical components. | | EU / international Ex certification | ATEX / IECEx | Project-specific certification route can be supported when required by the destination market and final hazardous-area classification. | | Eurasian market access | EAC / TR CU 012/2011 | Certification and technical documentation support can be coordinated for Russia, Kazakhstan and other EAEU destinations. | | Oil & gas procurement documents | IOGP JIP33 S-723 Electrical Process Heaters | JIP33-aligned data sheets, inspection and test plans, vendor document register and technical query response can be prepared for EPC review. | | Pressure boundary | ASME BPVC Section VIII / PED 2014/68/EU | Applicable pressure components and documentation are reviewed against circuit conditions and the destination requirements. | | Electrical cabinet and machine safety | IEC 61439 / IEC 60204-1 | Control cabinet layout, component selection, wiring practice and electrical protection can be configured around project requirements. | | Functional safety | IEC 61511 / SIL | SIL-rated safety loop design can be coordinated when independent shutdown or safety instrumented functions are specified. | | Circulating-fluid compatibility | Project fluid specification | Heater, pump, tank, seal and valve materials are reviewed for the circulating fluid and water quality. | | Inspection and handover package | EN 10204 3.1, NDT reports and FAT records | Material certificates, pressure test records, non-destructive testing reports, electrical test records and factory acceptance test files can be supplied. | | Ingress protection | IEC 60529 | IP65 / IP66 enclosure protection can be selected for outdoor oilfield stations and harsh operating environments. | Certification availability depends on the final equipment configuration, destination market, hazardous-area classification and third-party assessment. Listed standards describe engineering and documentation support, not blanket certification for every configuration. ### Supply Scope | Name | Origin/Brand | Remarks | | --- | --- | --- | | Heater Body | Shenyang Xinguang Electric Manufacturing Co., Ltd. | Heater pressure boundary and circulation connections | | Heating Element | Shenyang Xinguang Electric Manufacturing Co., Ltd. | Material and surface heat load selected for the circulating fluid | | Control Cabinet | Shenyang Xinguang Electric Manufacturing Co., Ltd. | Explosion-proof or safe-area cabinet available | | Electrical Components | Delixi, Chint or project-approved equivalents | Temperature control, pump starter and electrical protection components | | Instruments | Chuanyi, Anhui Tiankang, Beijing Tiantai or project-approved equivalents | Supply / return temperature, circulation flow, water level and pressure monitoring | | Circulating Pump | Project-selected supplier | Flow, head and seal arrangement matched to the circuit | | Make-up Water Tank | Included in the package | Capacity, connections and level monitoring selected by project | | Skid Base and Piping | Shenyang Xinguang Electric Manufacturing Co., Ltd. | Common base with supply / return and maintenance interfaces | | Valves | Zhejiang Gong'ao, Zhejiang Huisheng or approved equivalents | Isolation, drain and other circuit valves as specified | Selection Support ## From operating conditions to a practical equipment review. Start with the heating demand of the connected tanks or radiators. Final selection reviews warm-up time, supply / return temperatures, circulation flow, distribution losses, coil capacity and pump head. ### What to share with our team. Send your circuit schematic, coil or radiator data and equipment specification. The heat carried by circulating water is only part of the review; it does not establish tank warm-up duty, coil capacity or the pump head required by your circuit. - Circulating fluid, water quality and freeze-protection strategy - Connected tank, coil or radiator heating duty - Required circulation flow and operating range - Design supply and return temperatures - Operating pressure and ratings of all connected equipment - Piping layout, length, diameter, elevation and circuit resistance - Coil / radiator data and number of heating branches - Tank liquid inventory, initial temperature and required warm-up time - Hazardous-area classification - Ambient conditions, insulation and distribution heat losses - Power supply and site electrical limits - Skid dimensions, supply / return flanges and make-up water source - Pump operating philosophy, local panel and remote signal requirements [Send Your Specification](https://xgthermal.com/contact.html) ### Common engineering questions. How is this different from a circulation heater alone? A circulation heater is the heating component. This electric heating skid adds the circulating pump, make-up water tank, piping and controls needed to serve an external heating circuit. Buyers may also describe it as a packaged hot-water heating skid or an electric circulation heating unit. Does crude oil circulate through this skid? In the tank-coil arrangement described here, water circulates through the skid and the storage tank coils; the oil remains in the tank. Direct crude oil heating and oil-water-gas process heating are different duties and require a separate equipment selection. How are the circulating pump flow and head selected? Pump flow is matched to the required heat transport and the permitted supply-to-return temperature difference. Pump head is determined from the heater, external piping, valves and coil resistance. Static head and suction conditions also need review according to the circuit arrangement. Can it replace a gas-fired tank heating system? It can be evaluated as an electric alternative where a suitable water circuit and sufficient electrical capacity are available. Selection must check the existing coil duty, site power supply and operating schedule. Energy cost depends on local electricity and fuel prices, so savings are assessed for each project. Do you manufacture electric heating skids in China? Yes. XGTHERMAL is a China-based manufacturer of skid-mounted electric heating systems for oilfield applications. We support package configuration, coordinated controls, fabrication and project documentation for domestic and overseas customers. What certification documents can be supported? Project documentation can be prepared around IEC 60079 / GB/T 3836 hazardous-area requirements, NDT, material certificates, FAT records and, where required, project-specific ATEX, IECEx, EAC or JIP33 alignment discussions. Manufacturing & Delivery ## One coordinated package. Clear interfaces for site installation. Manufacturing since 1992, with 120+ projects delivered across our industrial heating equipment range. [Review Our Capabilities](https://xgthermal.com/about.html) ### Review the package before fabrication. General arrangement, supply and return connections, skid footprint, pump selection and electrical interfaces are coordinated with your team. Inspection and acceptance requirements are agreed for the complete package. - Equipment layout and connection details for engineering review. - Material and component documentation within the agreed supply scope. - Pressure, electrical and functional testing as specified. - FAT, operating instructions and final handover records as required. [Review Your Package Requirements](https://xgthermal.com/contact.html)