Input requirements include the pipe size, operating temperature, ambient temperature and wind speed, and details about the insulation system material and jacketing. This guide establishes a means by which the engineer, designer, or operator can determine the acceptable surface temperature of a system where contact may be made with a heated surface. The procedure requires the user to make several decisions. Careful documentation of the rational for each decision, and the intermediate result, is an important part of the evaluation process.
For the purposes of this calculator, the maximum contact exposure times are based on an acceptable injury level of first-degree burns reversible epidermal injury, or the limit represented by the lower "Threshold B" curve shown in Figure 1 of the standard.
Acceptable contact times will depend on the application. Clearly, quite different contact times may be justified for cases as diverse as those involving infants and domestic appliances compared with experienced adults operating industrial equipment.
Where no available standards for these times are prescribed, the standard recommends the following, based on a survey of the medical literature:. As with the other calculators, the insulation materials included in this calculator were selected to be representative of some of the materials commonly used in the industry.
The list is not inclusive of all materials and types, and others are available. Also note that some materials are not available in all the sizes and thicknesses covered by this calculator, and some are available in sizes and thicknesses not listed. These calculators estimate the temperature drop or rise of air flowing in a duct or fluid flowing in a pipe. An example of their application is in the use of insulation to minimize temperature change either drop or rise of a process fluid from one location to another—e.
Simple Insulation Calculators. Condensation Control Calculator — Horizontal Pipe This calculator estimates the thickness of insulation required to avoid condensation on the outer surface of an insulated horizontal steel pipe. Table 1. Energy Calculator for Horizontal Piping It should be noted that the horizontal pipe calculator and the vertical flat surface calculator were developed to be representative of applications typical for mechanical insulation.
Table 2. Financial Returns - Considerations Calculator This calculator was developed to provide a convenient way to estimate the financial returns related to return on investments ROI in mechanical insulation: simple payback in years, internal rate of return IRR , net present value NPV , and annual and cumulative cash flow.
Mechanical Insulation Financial Calculator Estimate Time to Freezing for Water in an Insulated Pipe This calculator estimates the time for a long, fluid-filled pipe no flow to reach the freezing temperature. Cost and value are not synonymous concepts, but they are often used indiscriminately when discussing a building project.
In the context of a project, cost is never simple or singular. There are many types of cost. For most large scale building projects, cost can be split into three types: construction costs, building operation costs, and building maintenance costs.
Splitting cost into these three types will help us understand the complex relationship between cost and value. Construction costs are the most transparent costs when planning a building project, and are basically comprised of the cost of design, materials, and time.
Construction costs are concerned, as their name makes clear, with the construction phase of the project. Because the construction phase is the first—and to most people involved—the most important stage of the project, they are often focused on its costs to the neglect of the other types of costs, namely, operational and maintenance costs.
Now that we have a better understanding of construction costs and why they are often over emphasized during the planning and design stages of large scale projects, we can discuss operational and maintenance costs. Construction costs are calculated and felt by decision makers in the present, whereas operational and maintenance costs, although provisionally forecasted, are not; and thus are lightly weighted factors for decision making.
Mechanical insulation is a technology that affects the future. If you don't see the tool you are looking for keep searching through our numerous tool categories. Use this cement trowel for Cal-Coat. The Malco 24 Radius Divider is used as a simple sheet metal fabrication layout divider.
The G Outward Clinch Tacker gun is a common tool used by most mechanical insulators around the na. N95 Approved Particulate Respirators. These 3M dust masks come with an adjustable metal no. The Dexter Russell 10" Rubber Knife is a favorite with mechanical insulators. The 10" square p.
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