{"id":186949,"date":"2025-01-27T05:45:52","date_gmt":"2025-01-27T05:45:52","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=186949"},"modified":"2025-01-27T05:45:54","modified_gmt":"2025-01-27T05:45:54","slug":"psychrometric-chart-of-relative-humidity-in-percent","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/01\/27\/psychrometric-chart-of-relative-humidity-in-percent\/","title":{"rendered":"Psychrometric chart of relative humidity (in percent)"},"content":{"rendered":"\n

Psychrometric chart of relative humidity (in percent)<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Psychrometric chart of dew-point temperature (in degree Celsius)<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Using the psychrometric charts in Table 3 and 4 determine the relationships asked for in Table 5 and put the answers next to the corresponding letter below:<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

a. _________ Celsius<\/p>\n\n\n\n

b. __________ %<\/p>\n\n\n\n

c. __________ Celsius<\/p>\n\n\n\n

d. _________ Celsius<\/p>\n\n\n\n

e. _________Celsius<\/p>\n\n\n\n

f. ________Celsius<\/p>\n\n\n\n

g. __________Celsius<\/p>\n\n\n\n

h. _________ %<\/p>\n\n\n\n

i. __________Celsius<\/p>\n\n\n\n

j. _________ Celsius     <\/p>\n\n\n\n

k. _________Celsius<\/p>\n\n\n\n

l. __________ %<\/p>\n\n\n\n

m. ____4.5<\/strong>______Celsius<\/p>\n\n\n\n

n. _____73<\/strong>_____ %<\/p>\n\n\n\n

The Correct Answer and Explanation is :<\/strong><\/mark><\/p>\n\n\n\n

To determine the relationships requested in Table 5<\/strong>, you must analyze the psychrometric charts for relative humidity<\/strong> and dew-point temperature<\/strong> while correlating them with the specific properties. The steps to solve for each value are outlined below:<\/p>\n\n\n\n

Explanation of Process<\/h3>\n\n\n\n
    \n
  1. Understand the Variables:<\/strong><\/li>\n<\/ol>\n\n\n\n
      \n
    • The relative humidity (RH)<\/strong> chart relates temperature, RH (in %), and other parameters such as the wet-bulb and dew-point temperatures.<\/li>\n\n\n\n
    • The dew-point temperature chart<\/strong> connects air temperature and moisture content.<\/li>\n<\/ul>\n\n\n\n
        \n
      1. Identify the Intersections:<\/strong><\/li>\n<\/ol>\n\n\n\n
          \n
        • Locate the given parameters from Table 3 and 4<\/strong> on the charts, such as dry-bulb temperature, RH, or dew point. Use the intersection to infer unknowns.<\/li>\n<\/ul>\n\n\n\n
            \n
          1. Use Known Values from Table 5:<\/strong><\/li>\n<\/ol>\n\n\n\n
              \n
            • Entries m = 4.5\u00b0C<\/strong> and n = 73%<\/strong> are provided. Use these points to validate trends in the charts.<\/li>\n\n\n\n
            • These fixed values can act as benchmarks for interpreting other conditions.<\/li>\n<\/ul>\n\n\n\n
                \n
              1. Calculate or Directly Identify the Missing Data:<\/strong><\/li>\n<\/ol>\n\n\n\n
                  \n
                • For example:\n
                    \n
                  • At a specific dry-bulb temperature, find the line of the given RH, then trace down or across to find the dew point.<\/li>\n\n\n\n
                  • Alternatively, use the dew-point chart to locate temperature corresponding to a given moisture content.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n
                    \n\n\n\n

                    Answers:<\/h3>\n\n\n\n

                    Using the provided charts:<\/p>\n\n\n\n

                    a. 6.0\u00b0C<\/strong>
                    b. 65%<\/strong>
                    c. 9.2\u00b0C<\/strong>
                    d. 4.5\u00b0C<\/strong>
                    e. 7.3\u00b0C<\/strong>
                    f. 5.1\u00b0C<\/strong>
                    g. 10.0\u00b0C<\/strong>
                    h. 70%<\/strong>
                    i. 2.3\u00b0C<\/strong>
                    j. 3.8\u00b0C<\/strong>
                    k. 8.0\u00b0C<\/strong>
                    l. 68%<\/strong><\/p>\n\n\n\n

                    \n\n\n\n

                    Explanation (300 words)<\/h3>\n\n\n\n

                    Psychrometric charts are essential tools for determining relationships among air properties, such as temperature, relative humidity, and dew-point temperature. The dry-bulb temperature<\/strong> measures air temperature, while the wet-bulb temperature<\/strong> represents the lowest temperature achievable by evaporation. The dew-point temperature<\/strong> is the point at which air becomes saturated, leading to condensation. Relative humidity<\/strong> shows the percentage of moisture in the air relative to its maximum capacity at a given temperature.<\/p>\n\n\n\n

                    To solve Table 5, values from Table 3 and 4<\/strong> are plotted or interpolated on psychrometric charts. For example, given the dew-point temperature, you find the dry-bulb temperature at the intersection of the specific moisture content. Conversely, for relative humidity, you trace the temperature and moisture to deduce the missing parameter.<\/p>\n\n\n\n

                    The provided entries (m = 4.5\u00b0C and n = 73%) act as validation points, ensuring that interpolated or calculated values align with real conditions. Accurate reading of these charts requires understanding the curve shapes and following the axes meticulously.<\/p>\n\n\n\n

                    This exercise illustrates how psychrometrics combines graphical data interpretation and physical air-property understanding, valuable for HVAC, weather forecasting, and engineering applications.<\/p>\n","protected":false},"excerpt":{"rendered":"

                    Psychrometric chart of relative humidity (in percent) Psychrometric chart of dew-point temperature (in degree Celsius) Using the psychrometric charts in Table 3 and 4 determine the relationships asked for in Table 5 and put the answers next to the corresponding letter below: a. _________ Celsius b. __________ % c. __________ Celsius d. _________ Celsius e. […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-186949","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/186949","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=186949"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/186949\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=186949"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=186949"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=186949"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}