Fundamentos e ingeniería
Pump Construction (Part1)
In 1689 the physicist Denis Papin invented the centrifugal pump and today this kind of pump is the most used around the world. The centrifugal pump is built on a simple principle: Liquid is led to the impeller hub and by means of the centrifugal force it is flung towards the periphery of the impellers. The construction is fairly inexpensive, robust and simple and its high speed makes it possible to connect the pump directly to an asynchronous motor.
Expansion Valves Selection
The expansion valve regulates the amount of compressed liquid refrigerant moving into the evaporator. It removes pressure from the liquid refrigerant to allow expansion or change of state from a liquid to a gas in the evaporator. In order to properly select Expansion Valves one should pay attention to the items that we mention in this post.
Water Tube Versus Fire Tube Boilers
Water tube boilers and fire tube boilers are two different types of steam boilers that are commonly used in industrial and commercial applications. Both types of boilers use a system of tubes to generate steam, but they differ in the way that the tubes are arranged and the way that the hot gases from the burner pass through the tubes.
Water Hammer (Part1)
Under unfavorable circumstances, damage due to water hammer may occur in pipelines measuring more than one hundred meters and conveying only several tenths of a liter per second. But even very short, unsupported pipelines in pumping stations can be damaged by resonant vibrations if they are not properly anchored. By contrast, the phenomenon is not very common in building services systems, e.g. in heating and drinking water supply pipelines, which typically are short in length and have a small cross-section.
Refrigeration Formulas and Calculations
These formulas are commonly used in the field of refrigeration and air conditioning to calculate various performance parameters of a refrigeration system such as compression work, compression power, coefficient of performance, net refrigeration effect, capacity, compressor displacement, heat of compression, volumetric efficiency, and compression ratio. These formulas are based on the thermodynamics principles and are generally used to evaluate the performance of the refrigeration system and to optimize its design.
The coefficient of velocity (Cv)
Cv, or coefficient of velocity, is a measure of the flow capacity of a valve. It represents the number of gallons per minute (GPM) of water at 60°F that will flow through a valve with a one-inch opening at a pressure drop of one pound per square inch (PSI). Cv can be calculated using various formulas, such as the one based on water at 60F and one that takes into account the specific gravity of the fluid. Cv is a theoretical value and it may vary depending on the actual conditions of the valve. When selecting a valve for a specific application, it is important to consider the Cv in relation to the flow rate and pressure drop requirements of the system, as well as other factors such as ease of maintenance, cost, and safety.
Pipe Insulation Guideline
Pipe insulation is crucial for maintaining energy efficiency, temperature control, condensation control, noise reduction, and safety. ASHRAE provides specific thickness recommendations for different pipe sizes and temperature ranges in its standard 90.1. When selecting pipe insulation based on ASHRAE standards, it’s important to consider the temperature, pipe size, environmental considerations, fire resistance, and energy efficiency.
Tubería de refrigerante - parte 2
In this post, we will be continuing our comprehensive training on how to size refrigerant piping. We will cover all the important aspects of this process, including determining the pipe size, pressure drop, and other factors. We will also discuss topics such as sizing refrigerant lines, equivalent length for refrigerant lines, and how to determine equivalent length. With this training, you will have the knowledge and confidence to size refrigerant piping accurately and correctly in any situation.
Normas y cumplimiento
Diseño del conducto de HVAC: pérdida de fricción de accesorios del conducto
Guía completa para la pérdida de fricción de los accesorios del conducto HVAC utilizando estándares de portadores que cubren coeficientes de pérdida, cálculos de caída de presión y optimización del sistema para un diseño eficiente de distribución de aire.
Diseño del conducto HVAC: amortiguadores, atenuadores y bobinas Pérdida de fricción
Guía completa de amortiguadores de HVAC, atenuadores y bobinas Pérdida de fricción utilizando estándares SMACNA que cubren los cálculos de caída de presión, la selección de componentes y la optimización del sistema para un diseño eficiente de distribución de aire.
Diseño del conducto HVAC: conducto redondo a rectangular equivalente
Guía completa para la equivalencia del conducto redondo a rectangular HVAC utilizando estándares ASHRAE que cubren fórmulas de conversión, consideraciones de rendimiento y optimización del sistema para instalaciones con restricciones espaciales.
Diseño del conducto HVAC: pérdida de fricción del conducto
Guía completa para los cálculos de pérdida de fricción del conducto HVAC utilizando estándares ASHRAE que cubren gráficos de fricción, análisis de caída de presión y optimización del sistema para un diseño eficiente de distribución de aire.
Diseño del conducto HVAC: clasificación de presión del conducto
Guía completa para la clasificación de presión del conducto HVAC utilizando estándares SMACNA que cubren la selección de la clase de presión, los requisitos de construcción y los protocolos de prueba para sistemas de conductos seguros y eficientes.
Diseño del conducto HVAC: tamaño de conducto de cocina comercial
Guía completa del tamaño de los conductos de cocina comerciales utilizando estándares ASHRAE y NFPA que cubren el diseño de la campana de escape, gestión de grasa, seguridad contra incendios y sistemas de aire de maquillaje para operaciones de servicio de alimentos.
Diseño del conducto de HVAC: tamaño del conducto por velocidad y criterios de ruido (NC)
Guía completa para el tamaño del conducto HVAC utilizando criterios de velocidad y ruido con estándares de cibry y cibse que cubren el diseño acústico, los límites de velocidad y el control de ruido para aplicaciones sensibles.
Diseño del conducto HVAC: tamaño del conducto por método de igual fricción
Guía completa para el tamaño del conducto HVAC utilizando el método de igual fricción con estándares SMACNA y ASHRAE que cubren los procedimientos de cálculo, la selección de la velocidad de fricción y la optimización del sistema para un diseño efectivo de distribución de aire.
Diseño del conducto HVAC: recomendaciones de ductos Smacna
Guía completa del dimensionamiento del conducto HVAC utilizando recomendaciones de Smacna que cubren los métodos de recuperación de la misma fricción, velocidad y recuperación estática con cálculos de diseño y optimización del sistema para una distribución efectiva del aire.
Herramientas y recursos digitales
HVAC-R Load Calculator: Your Essential Tool for Accurate System Sizing
Our new web-based calculator combines sophisticated engineering principles with an intuitive interface, making accurate load calculations accessible to everyone from students to seasoned professionals. Unlike basic square-footage estimators, our tool considers the multitude of factors that influence heating and cooling requirements.
Gráfico psicrométrico interactivo
The aim of this web app is to create an interactive psychrometric chart on which you can project a range of comfort metrics as well as mapping weather data or room air conditions calculated using EnergyPlus. You can add or remove lines for a range of different metrics or highlight them individually to assist with dynamic explanations or presentations.
Financiamiento HVAC-R simplificado: Presentamos nuestra calculadora de equipos inteligentes
we’ve developed a comprehensive HVAC-R Equipment Financing Calculator that goes beyond basic loan calculations to include industry-specific considerations like energy savings, equipment efficiency, and available tax incentives
Download Weather Design Conditions (ASHRAE)
Discover ASHRAE Handbook weather stations with our comprehensive search tool. Optimize HVAC and equipment design, sizing, distribution, and installation for residential, commercial, and industrial applications. Enhance your energy-related projects across various sectors, including agriculture, by leveraging accurate climatic data.