94 lines
3.8 KiB
JavaScript
94 lines
3.8 KiB
JavaScript
const coolprop = require('../src/index.js');
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describe('R449a Real Values', () => {
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it('should calculate superheat correctly at -40°C saturation', async () => {
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const result = await coolprop.calculateSuperheat({
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temperature: -35, // 5K above saturation temp of -40°C
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pressure: 0, // saturation pressure at -40°C (from chart)
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refrigerant: 'R449a',
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tempUnit: 'C',
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pressureUnit: 'psig'
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});
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expect(result.type).toBe('success');
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expect(Math.abs(result.superheat - 5)).toBeLessThan(0.2); // Should be ~5K superheat
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});
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it('should calculate superheat correctly at -20°C saturation', async () => {
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const result = await coolprop.calculateSuperheat({
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temperature: -15, // 5K above saturation temp of -20°C
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pressure: 20.96, // saturation pressure at -20°C (from chart)
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refrigerant: 'R449a',
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tempUnit: 'C',
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pressureUnit: 'psig'
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});
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//console.log(result);
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expect(result.type).toBe('success');
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expect(Math.abs(result.superheat - 5)).toBeLessThan(0.2); // Should be ~5K superheat
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});
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it('should calculate subcooling correctly at 30°C saturation', async () => {
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const result = await coolprop.calculateSubcooling({
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temperature: 25, // 5K below saturation temp of 30°C
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pressure: 195, // saturation pressure at 30°C (from chart)
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refrigerant: 'R449a',
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tempUnit: 'C',
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pressureUnit: 'psig'
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});
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expect(result.type).toBe('success');
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expect(Math.abs(result.subcooling - 5)).toBeLessThan(0.2); // Should be ~5K subcooling
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});
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it('should calculate subcooling correctly at 40°C saturation', async () => {
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const result = await coolprop.calculateSubcooling({
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temperature: 35, // 5K below saturation temp of 40°C
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pressure: 254.2, // saturation pressure at 40°C (from chart)
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refrigerant: 'R449a',
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tempUnit: 'C',
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pressureUnit: 'psig'
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});
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expect(result.type).toBe('success');
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expect(Math.abs(result.subcooling - 5)).toBeLessThan(0.2); // Should be ~5K subcooling
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});
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it('should calculate zero superheat at saturation point', async () => {
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const result = await coolprop.calculateSuperheat({
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temperature: 0, // Exact saturation temperature
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pressure: 74.05, // Matching saturation pressure from chart
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refrigerant: 'R449a',
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tempUnit: 'C',
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pressureUnit: 'psig'
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});
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expect(result.type).toBe('success');
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expect(Math.abs(result.superheat)).toBeLessThan(0.2); // Should be ~0K superheat
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});
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it('should calculate zero subcooling at saturation point', async () => {
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const result = await coolprop.calculateSubcooling({
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temperature: 20, // Exact saturation temperature
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pressure: 146.0, // Matching saturation pressure from chart
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refrigerant: 'R449a',
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tempUnit: 'C',
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pressureUnit: 'psig'
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});
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expect(result.type).toBe('success');
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expect(Math.abs(result.subcooling)).toBeLessThan(0.2); // Should be ~0K subcooling
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});
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it('It should also work with R449A (capital A)', async () => {
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const result = await coolprop.calculateSubcooling({
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temperature: 20, // Exact saturation temperature
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pressure: 146.0, // Matching saturation pressure from chart
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refrigerant: 'R449A',
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tempUnit: 'C',
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pressureUnit: 'psig'
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});
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expect(result.type).toBe('success');
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expect(Math.abs(result.subcooling)).toBeLessThan(0.2); // Should be ~0K subcooling
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});
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});
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