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Ground Source Heat Pump (GSHP) Borehole Thermal Resistance Calculator

Easily calculate and compute ground source heat pump (gshp) borehole thermal resistance calculator with accurate equations, live formulas, and expert guidance.

Drilled geothermal borehole diameter.

HDPE loop pipe outside diameter (typically 32mm / 1.25").

Thermally enhanced bentonite grout conductivity (typically 1.6 to 2.4 W/m*K).

Spacing between downward and upward U-tube legs with spacers.

Calculated Result
0.12 m·K/W

Borehole Resistance (Rb)

Borehole Resistance (Rb)

0.12 m·K/W

Borehole Thermal Resistance Rb M K W

0.119

Pipe Shank Spacing Ratio

2.03

Borehole Heat Exchanger Rating

Excellent Thermal Transfer (Low Resistance Borehole)

0.12 — m·K/W

Calculation Breakdown

  1. Applied FormulaCalculates borehole internal thermal resistance Rb for vertical Ground Source Heat Pump (GSHP) closed-loop U-tube ground heat exchangers.R_b = \frac{1}{S_b k_g}, \quad q = \frac{T_{fluid} - T_{borehole}}{R_b}

GSHP Borehole Resistance Metric Output

Interactive visualization based on your current inputs

Calculated Value
0.00.30.50.81.0Borehole Resistance (Rb)

What Is the Ground Source Heat Pump (GSHP) Borehole Thermal Resistance Calculator?

This tool computes ground source heat pump (gshp) borehole thermal resistance calculator with high precision arithmetic.

How Does the Ground Source Heat Pump (GSHP) Borehole Thermal Resistance Calculator Work?

Calculates borehole internal thermal resistance Rb for vertical Ground Source Heat Pump (GSHP) closed-loop U-tube ground heat exchangers.

Ground Source Heat Pump (GSHP) Borehole Thermal Resistance Calculator Formula & Variables

The core mathematical equation utilized by this calculator is expressed as:

Rb=1Sbkg,q=Tfluid−TboreholeRbR_b = \frac{1}{S_b k_g}, \quad q = \frac{T_{fluid} - T_{borehole}}{R_b}

Calculates borehole internal thermal resistance Rb for vertical Ground Source Heat Pump (GSHP) closed-loop U-tube ground heat exchangers.

How to Use the Ground Source Heat Pump (GSHP) Borehole Thermal Resistance Calculator

  1. Enter your parameters into the designated input fields to calculate the result immediately.

Step-by-Step Example Calculation

Ground Source Heat Pump (GSHP) Borehole Thermal Resistance Calculator Example

Input Values:

boreholeDiameterMm:150.0
uTubeOuterDiameterMm:32.0
groutThermalConductivityWMK:1.8
shankSpacingXcSparMm:65.0
Worked Steps: Sample evaluation based on standard reference conditions.

Understanding Your Result

The calculated primary figure indicates the optimal or required m·K/W.

Factors That Affect the Result

  • Measurement tolerances, operational variance, and real-world conditions.

When Should You Use This Calculator?

  • Everyday budgeting, technical homework, professional estimation, and household projects.

Assumptions & Limitations

  • Assumes standard atmospheric or environmental parameters unless specified.

Frequently Asked Questions

Calculation Accuracy & Reference Note

Double-precision IEEE 754 arithmetic with validated empirical constants.

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