Calculate the Best Fire Pump Engine for Your Facility’s Pump Room

The key to an optimal fire protection sprinkler system is a fire pump that provides consistent flow and pressure to all sprinkler heads in your facility. You need to choose the right fire pump engine for your pump room to ensure your facility’s safety.

Several factors will influence how you select a fire pump engine, including engine de-rate speed, ventilation sizing, cooling loop sizing and more.

Seleccion de Motor
Seleccion de Motor
NFPA20 11.2.2.7 "... Los motores deberán tener una clasificacion mínima de 4 horas en caballos de fuerza, equivalente o superio a la potencia al frenos en caballos de fuerza requerida para accionar la bomba a su velocidad nominal, bajo las condiciones listadas para las condiciones ambientales a las queencuentra la carga de la bomba".
Verifique la Selección de su Motor Aquí
Contrapresion de sistema de escape
Contrapresion de sistema de escape
NFPA20 11.5.2.1 Cada motor tendrá un sistema de escape independiente.
Verifique su Contrapresion Aqui
Ventilación
Ventilación
Un sistema adecuado de ventilación y ventilación debe "Limitar la temperatura del cuarto de la bomba a 49C (120F) en la entrada del filtro de aire con el motor funcionando a la carga nominal" (11.3.2.1.1), "Suministrar el aire adecuado para la combustión del motor ( 11.3.2.1.2), y "eliminar vapores peligrosos" (11.3.2.1.3).
Verifique los CFM Requeridos para su Motor Aqui
Lazo de Enfriamiento
Lazo de Enfriamiento
FM 1333 3.6.1 "Los sistemas de enfriamiento líquido deberán estar equipados con un circuito de suministro de agua cruda para controlar el flujo de agua cruda a todos los dispositivos de enfriamiento." FM 1333 4.36.1 "Los circuitos de suministro de agua cruda deberán ser capaces de proporcionar el flujo requerido al dispositivos de enfriamiento del motor con dispositivos de tensión restringidos en un 50 por ciento, una presión de entrada mínima y los reguladores de presión configurados para la máxima presión de entrada de los dispositivos de enfriamiento ".
Verifique el Tamaño Apropiado de su Lazo de Enfriamiento Aqui 
Línea de combustible diesel
Línea de combustible diesel
NFPA 20 11.4.1.3.1 "Los tanques de suministro de combustible deben tener una capacidad de al menos igual a 1 galón por hp (5.07L por KW), más 5% de expansión y 5% de volumen para sumidero".
Verifique su Distancia para las Lineas de Combustible Aqui 
PLD/SPLD
PLD/SPLD
NFPA20 11.2.4.3.1 "Control de limitación de presión de velocidad variable o sistemas de control de limitación de succión de velocidad variable utilizados en motores diesel para impulsión de bomba contraincendios deben de estar lisstados para el servicio de bomba de incendio y ser capaces de limitar la cabeza nominal total  de salida de la bomba(Presión) o la presión de succión mediante la reduccion de la velocidad de la bomba ".
Verifique su Motor de Tipo PLD Aqui Verifique su Motor de Tipo SPLD Aqui
El Aumento de la temperatura del agua
El Aumento de la temperatura del agua
A20 11.2.8.5.2 "El caudal de agua de refrigeración requerido debe establecerse con base en la máxima temperatura ambiente de agua de refrigeración ".
Verifique su Temperatura de Salidad del Agua de Refrigeracion Aqui 

Navigate to Each Unique Calculator

Use the below graphic to learn more about the distinct components of and factors that affect a Clarke fire pump engine. Hover over the icons to reveal descriptions and links to individual component pages.

Factors to Consider When Selecting a Diesel Fire Pump Engine

Read on for descriptions of fire pump and fire pump room factors to determine which engine model is best for you:

  • Engine Selection – Specific conditions to consider including installation location, altitude, pump max power, engine/pump speed, and other de-rate conditions.
  • Exhaust Backpressure – Confirm the silencer's backpressure for the selected Clarke engine will work with the exhaust system design (pipe size, elbows, straight pipe, silencer type).
  • Pump Room Ventilation Sizing – Adequate pump room ventilation is critical, so you must determine the amount of airflow that is required for engine combustion and to remove the engine radiated heat.
  • Cooling Loop Sizing - Cooling Loops (also known as a bypass loops) allow for raw water to travel from the pump to the engine's heat exchanger to be used to remove the heat from the engine coolant. You must make sure the cooling loop is sized correctly for your fire pump room.
  • Diesel Fuel Tank & Piping Sizing - Determine the correct diesel fire tank size and supply and return fuel line/pipe dimensions for your pump room.
  • PLD-D Discharge - Protect against over and under discharge pressurizations by selecting a variable speed discharge pressure limiting control (PLD-D) certified diesel fire pump driver.
  • PLD-S Suction - Protect suction supply piping by selecting a Clarke variable speed suction  pressure limiting control (PLD-S) certified diesel fire pump driver.
  • Water Temperature Rise – Calculate a Clarke engine's cooling water temperature based on the raw water supply inlet temperature, the raw water flow rate, and the heat produced with the engine running.

Find the Right Diesel Fire Pump Engine for Your Pump Room

Still have questions after utilizing our calculators? Our team is here to help. Contact Us today for assistance with your fire protection needs.

DISCLAIMER: While every effort has been made to ensure that the information is accurate, Clarke Fire Protection Products, Inc. makes no claims of the accuracy of the content contained herein or the results derived from the calculator(s). The calculator is designed to assist in providing data, however it is up to the user to verify the data for accuracy. In no event shall Clarke Fire Protection Products, Inc. be liable to any party for any direct, indirect, incidental, exemplary, compensatory, punitive, special or consequential damages, costs, expenses, legal fees, or losses (including, without limitation, lost income or lost profits and opportunity costs) in connection with any use of, or reliance upon the calculator(s) even if advised of the possibility of such damages.